We are compelled to make an assessment of5 per cent.on all prizes over fifty dollars($50) awarded to them; and in order to expedite the business of the distribution in packing and forwarding the gifts, ticket-holders must withinten daysafter notification of the value of the gift awarded to them, forward to us the amount of per centage, with directions for the packing and expressing of their gift, or else at the expiration of that time it will be forfeited.
We are compelled to make an assessment of5 per cent.on all prizes over fifty dollars($50) awarded to them; and in order to expedite the business of the distribution in packing and forwarding the gifts, ticket-holders must withinten daysafter notification of the value of the gift awarded to them, forward to us the amount of per centage, with directions for the packing and expressing of their gift, or else at the expiration of that time it will be forfeited.
Then there was B. Flat's "National Engineers Gift Enterprise," which with a spice of humor announced that it was controlled by the class of men for whose benefit it was devised—"all engineers." It had as "references" a "State senator" of New York and another of Illinois, a lithographer, an editor, a hardware merchant, and other like distinguished personages, whose callings were proudly set forth, presumably to show that they were not mere adventurers. An enlightened press, if we may believe the circulars, backed up this "association." "Its managers are men of the strictest integrity," said one Milwaukee paper; "We believe they will discharge all their obligations to purchasers of tickets with punctuality and integrity," said a second; "An institution above suspicion, and worthy in every respect of public patronage. The managers we believe to be honest, reliable, and trustworthy," said a third. "The safest investment of the kind in America," said one Chicago paper, unless the circular falsifies; "Considered as a sure success," said a second. One New York paper is quoted as commending the enterprise, and another as thinking that "$30,000 for $2.00 is worth chancing." But when the thing went to pieces, and B. Flat escaped on bail, it was announced that "the swindle had been exposed by the press," as indeed it was.
PEGASUS IN HARNESS.
The muse that in our day quits Parnassus to pay gossiping visits among the pill-kneaders, and to lounge in the haunts of trade, has of late been pressed into service by the guild of beggars. Perceiving, doubtless, that fortunes are got in teas, trousers, and tooth washes by sheer dint of literary advertising, the mendicants too have quaffed the Pierian spring, and now leave their sheets of verses at our doors for the accommodating price of "whatever you choose to give." The rogues have learned wisdom by experience. When a long-winded legislator troubles his fellow Solons with an unwelcome speech, he is sometimes gently rebuked by cries of "Oh, print the rest!" That is what the professional beggars have learned to do. Habitually cut off in their tale of woe at the door sill by an unfeeling "There's nothing for you!" they have learned to print the rest, and now before Dora the doormaid can utter her formula of rejection, a neat circular is in her hand, on which is printed: "Please give this to the lady or gentleman. Will call in an hour."
Such, in fact, was the inscription on a printed page left at the Maison Quilibet this very morning, purporting to be a "copy of verses by a party of mechanics," as indeed one may easily believe that it is, from the internal evidence of such stanzas as these:
For many weeks we work have sought,But work we cannot procure.Sad distress has been our lot,To go from door to door.May want upon you never frown,Nor in your dwelling come;May Heaven pour its blessings downOn every friendly soul.Lord Jesus, thou hast shed thy bloodFor thousands such as we;Many despise the poor tradesman's lot,But to Thy Cross I flee.
For many weeks we work have sought,But work we cannot procure.Sad distress has been our lot,To go from door to door.
For many weeks we work have sought,
But work we cannot procure.
Sad distress has been our lot,
To go from door to door.
May want upon you never frown,Nor in your dwelling come;May Heaven pour its blessings downOn every friendly soul.
May want upon you never frown,
Nor in your dwelling come;
May Heaven pour its blessings down
On every friendly soul.
Lord Jesus, thou hast shed thy bloodFor thousands such as we;Many despise the poor tradesman's lot,But to Thy Cross I flee.
Lord Jesus, thou hast shed thy blood
For thousands such as we;
Many despise the poor tradesman's lot,
But to Thy Cross I flee.
Suddenly shifting then from poesy to prose, the circular continues:
Ablessing.—May the blessings of God await you; may the bright sun of glory shine above thy bed; may the gates of plenty, honor, and happiness be ever open to thee; may no sorrow distress thy days, and when the dim curtain of death is closing around thy last sleep, and the lamp of life extinguishing, may it not receive one rude blast to hasten its extinction.
Ablessing.—May the blessings of God await you; may the bright sun of glory shine above thy bed; may the gates of plenty, honor, and happiness be ever open to thee; may no sorrow distress thy days, and when the dim curtain of death is closing around thy last sleep, and the lamp of life extinguishing, may it not receive one rude blast to hasten its extinction.
Thus having propitiated the æsthetic feeling as well as the benevolent heart of the householder, the circular proceeds to business by declaring that "the bearers are a party of unemployed tradesmen, who," etc. There is, of course, no resisting the appeal to buy the poem and the benediction; only, when Dora the doormaid is afterward questioned how many unemployed tradesmen formed the party, and she answers, "Only one, ma'am, and he's no tradesman," we look at each other as we do when "The Blind Man's Prayer" is given to us in the street car by some bright-eyed little girl, or some boy who meanwhile munches an apple. "It's my uncle," says the lad, if asked whether he is perhaps, the person alluded to in the lines, "You see before you a poor, blind man," etc.; and I fancy that the literature of mendicancy has now become important enough to furnish a large variety of printed forms, so that the regular customer can choose for himself whether in any particular season he will be a poor blind man, or a lady that has seen better days, or a party of poetical mechanics.
Philip Quilibet.
SCIENTIFIC MISCELLANY.
THE SURVEY IN CALIFORNIA.
InLieutenant Wheeler's report of operations on the geographical and geological survey of the Territories west of the 100th meridian during 1876, we find the first explanation of the origin of the name California. The mountainous country of Mexico has three climates through which the traveller passes in going from the sea to the high country, the hot, the temperate, and the cold zones. The Mexicans call themtierra caliente,tierra templada, andtierra fria. They entered the present region of California from Sonora or New Mexico, and on their way passed a lake now called Lake Elizabeth, on the border of the California desert. There a violent west wind blows night and day. It is a realsirocco, dry, and so hot as to remind one of a blast from a furnace. The Mexicans accordingly made the country beyond it the fourth in their series of ascending temperatures, and named ittierra california, the country hot as a furnace.
This report is one of the most valuable produced by the survey. During the year the great area in California which lies below the level of the sea was examined to ascertain whether it could be filled and maintained as a lake by a canal from the Colorado river, and the decision is in the negative. The depressed area covers about 1,600 square miles in California, and the difference between the rainfall and the evaporation is so small that if the whole Colorado river were poured into the basin, it would cover only 556 square miles of surface, or little more than one-third the basin. Filling would cease at that level for the reason that the whole supply of the river would disappear in vapor. The slope of the Colorado river is extraordinary, 2.13 feet per mile at Stone's Ferry, and 1.21 feet at Camp Mohave, which may be compared with eight inches, the average fall of the Mississippi per mile. At Stone's Ferry the velocity is 3.217 feet per second and the discharge 18,410 cubic feet. Great difficulties stand in the way of the proposed canal, and the engineers do not think the lake, if it could be formed, would have an appreciable effect upon the climate of the surrounding region. The primary object of this survey is to carry the grand triangulation of the continent across the country under its jurisdiction, and to map the surface so as to enable the Government to put the ground properly in market. In addition to these objects a great amount of valuable work is done in geology and natural history.
Prof. Jules Marcou, geologist attached to the survey, points out that the valleys of Santa Clara and Santa Barbara in California may become the site oftrueartesian oil wells. The ordinary flowing oil well is supposed to obtain the force which lifts its oil above the surface level from confined gases in the earth, but in California the lift will be obtained in precisely the same manner as in the case of artesian wells for water. There are strata of sandstone impregnated with the petroleum, and these strata are lifted up on the mountain sides, so that a well bored at a low point in the valley would be supplied from a reservoir some thousands of feet high. The wells will have to be about three thousand feet deep.
The naturalists of the survey noted many singular phenomena of animal life. On the islands off the coast there is a race of liliputian foxes which is supposed to have been derived from the Gray fox, its small size and perfect fearlessness, together with its insect diet, being due to its confinement to the islands. This animal is so small that even the sheep breeders do not fear it. It lies under the cactus plants for its noonday nap, and to this fact must be due the remarkable circumstance noticed in skinning a number of them. In every instance the interior surface of the hide was perforated by cactus spines, and in one individual the hide was fairly coated within by these spines, some of which had become soft with age. There were so many that a knife could not have pierced the hide without touching the spines!
Another fact developed was that the great dread of the grizzly bear is resulting in his rapid extinction. Strychnine is considered indispensable to the outfit of a California shepherd, and the grizzlies have been killed or forced to the mountains, where they still linger in considerable numbers in the chapparal. It is noticeable that the Rocky mountain grizzly is a tame creature compared with his brother of the Sierra Nevada, who does not hesitate to take the initiative in a combat with man.
A GERMAN SAVANT AMONG THE SIOUX.
Prof. Virchow lately informed the Berlin Anthropological Society that an intrepid young German traveller, Herr von Horn von der Horck, is now (January, 1877) living among the Sioux Indians busily engaged in taking plaster casts for craniological studies. Von der Horck made a journey to the Polar sea last summer, returning by way of Lapland, where he made enormous collections of bones, skulls, and casts. Prof. Virchow says these collections are more complete in Scandinavian ethnology than all that European museums outside of Scandinavia contain. One result of this journey was the discovery of a continuous water way between the Gulf of Bothnia and the Polar sea, though not one that is capable of navigation. A lake, called Wawalo Lampi, lies on the divide between these two bodies of water, and sends a river to each. The northward flowing one is the Ivallo and the southward the Kititui. We are glad to welcome so enthusiastic and thorough a student to this country. It is precisely work like his that is needed in America, and the time for accomplishing it is rapidly passing away. We have too much theory and too little real investigation in American ethnology, and while the men of hypotheses are talking about the origin of the Indians, and endeavoring to trace them to Asiatic stocks through the medium of language, the race is fast losing its purity by intermarriage, as it has already lost the most distinctive of its peculiarities by intercourse with the whites.
BALLOONING FOR AIR CURRENTS.
It is well known to meteorologists that the wind vanes as ordinarily placed near the surface do not give a true indication of the wind. Even when the vane is not over a city or town where the air currents near the earth are affected by the direction of the streets, the varying character of the surface in respect to radiation and absorption of heat will modify them. It is therefore for good reasons that vanes are perched up on high flagstaffs fixed on the roofs of buildings. Some of these are more than a hundred feet above the ground, but recent observations in Paris show that this is not enough. Small India-rubber balloons a foot in diameter and with an ascensional force of about one ounce were sent up, and as they rose slowly, at the rate of twelve feet per second, the effect of the air currents upon them could be easily marked. This was found to be very variable at heights of less than one or two hundred metres (300 to 600 feet). The conclusion was that no observations at lower levels were trustworthy.
THE GREATEST OF RIFLES.
In spite of the familiarity with great cannon which the advances in gun construction of late years have produced, the experiments with the 100-ton gun of the Italian government have not failed to awaken general interest and wonder. It fires a 2,000-pound shell, and a charge of 240 pounds of powder is but a portion of what the gun will bear. These light charges have to be used if the penetrative effects of the gun under unfavorable conditions are to be studied, for with its full charge the weapon simply destroys anything that is put before it. Comparative results cannot be obtained when the only effect is complete ruin. It is somewhat remarkable that an over confident iron founder should have chosen this weapon to test once more the value ofcastiron for defensive armor. His idea was that armor could be made so hard by chilling the surface that the shot would be broken to pieces upon it, and experiments with a good iron and guns of small calibre had encouraged the hope. But a 2,000-pound shell and 400 pounds of powder in the 100-ton gun proved anew the unfitness of this material for armor plating. The shot had a velocity of 1,494 feet per second, and it smashed through an 8-inch plate of wrought iron, a wood layer, and a 14-inch plate of chilled cast iron. The ruin produced was greater than in any other experiment, the cast iron breaking into fragments. The power of this gun, the greatest rifle ever made, is such that a solid 22-inch plate of the best English wrought iron is completely penetrated by its shot.
VIENNA BREAD.
A "Vienna bakery" has been one of the most prominent objects at each of the last three international exhibitions, and probably there are many housekeepers who would be glad to know how this delicious bread is made. Unfortunately success does not always follow imitation, and several attempts to introduce the manufacture of this bread have failed, even when Vienna bakers were employed in the work; and yet there is absolutely no secret in the process. One of the American commissioners to the Vienna exhibition, Prof. E. N. Horsford, gave an elaborate report on this bread, and since he came to the conclusion that itcanbe made elsewhere, we will recount some of the causes upon which in his opinion its excellence depends. These are the mode of baking, the mode of making, the use of fresh "compressed yeast" which produces no acetic acid in fermentation, the use of selected flour, the mode of milling, and the kind of wheat.
The Baking.—The loaf should be so small that fifteen or twenty minutes will be sufficient to cook it through in an oven which is heated to a temperature of about 500 deg., or the melting point of bismuth. The rolls should not touch each other.The Mixing.—The proportions are:8pounds of flour,3quarts of milk and water, in equal proportions,3½ounces of pressed yeast,1ounce of salt,which should make about 380 rolls of the ordinary "Kaiser semmel" size. The milk and water in equal parts are first mixed and allowed to come to the usual temperature of a kitchen, and a small amount of flour is then mixed in it so as to make a thin emulsion. The yeast is added and well mixed in, first crumbling it in the hand, and the pan is left covered for three-quarters of an hour. Then the rest of the flour is slowly mixed in, with thorough kneading. The dough is left for two hours and a half, "at the end of which time it presents a smooth, tenacious, puffed, homogeneous mass, of slightly yellowish color." It is weighed into pound masses (all bread must be sold by weight in Europe), each of which is cut into twelve rolls. The proportions for twelve rolls should therefore be about as follows: 1-4 pound of flour, 1-5 pints milk and water, 1-10 ounce pressed yeast, and 1-32 ounce of salt. The small masses of dough have a thickness of three-quarters of an inch, and the workman, laying the back of his left forefinger in the centre of one, pulls out and folds up the corners of the irregular mass, and pinches them together. The little lump of dough is then reversed upon a smooth board, and after remaining there long enough to finish "rising," they are placed in the hot oven by means of a wooden shovel.The Yeast.—Pressed yeast, which is now made in America, is obtained by skimming the froth from mash while it is in active fermentation. The yeast is repeatedly washed with cold water until it settles pure and white in the water. It forms a tenacious mass which is pressed in a bag. It will keep about eight days in summer, and indefinitely if put on ice.The Flour.—Only a selected part of the flour is used in Vienna for the manufacture of white bread and rolls, amounting to about forty-five per cent. of the wheat. Precisely the same grades are not produced in the American process of milling, but Dr. Horsford thinks that good, fresh middlings flour will compare favorably with the average Hungarian flour.The Milling.—A peculiar mode of milling wheat has grown up in Austria and Hungary, which is almost the antipodes of the old and crude methods of grinding. It is called "high milling," and consists in cracking the wheat by successive operations down to the required size. First the wheat is run through a coarse mill, which takes off the beard at one end and the germ at the other. The resulting powder is then sifted, to separate the grits from the dross and flour, and the central part is again cracked, and the products sifted. Some flour is produced in each of these steps, but the best of the wheat kernel is still in the condition of grits, and the bran and outer coat of the kernel having been separated by the sifting, the pure grits are now cracked once more, and number one flour is produced. All the other flour from these three operations is purified from bran, mixed and ground, making number two flour. In short, the essential characteristic of the Austrian system of milling lies in a gradual process of reducing the wheat, with careful separation of the products, or cleaning, at each step. These products are quite numerous, as the following list shows:Class.Percentage.A.4.25Curly bracketLady groats.B.Table groats, fine.C.Table groats, coarse.0.Extra imperial flour.1.5.53Extra fine flour.2.5.76Ordinary fine flour.3.5.51Extra roll or semmel flour.4.6.48Common roll or semmel flour.5.7.12First pollen flour.6.13.30Second pollen flour.7.11.85First dust flour.8.9.95Second dust flour.9.4.36Brown pollen flour.10.6.32Fort flour.F.8.94Fine bran.G.6.87Coarse bran.H.3.76Chicken feed, loss, and dirt.100This chicken feed consists of the foreign seeds, the tares, which grow up with the wheat, and which are separated before milling. In the above list only 39 to 40 per cent. of the flour is fit for white bread making.The Wheat.—Last of all, in following back the processes of Vienna bread making, we come to one of the essential requirements, a proper kind of wheat. "The virtues of this bread," says Dr. Horsford, "had their origin principally in the Hungarian wheat. These are not due to any particular variety of wheat, or to any marked peculiarity of soil or mode of fertilizing, or to a mean annual temperature characterizing the climate of Hungary as a whole, but toa peculiarity of climate, uniting especial dryness of the air during the hot season, from the time of the development of the milk of the berry, through the period of its segregation of the various constituents of the grain, down to its being housed for thrashing." The Hungarian wheat is red, shrivelled, and hard, and it is this hardness that fits it so well to the successive crackings which constitute the process of "high milling."
The Baking.—The loaf should be so small that fifteen or twenty minutes will be sufficient to cook it through in an oven which is heated to a temperature of about 500 deg., or the melting point of bismuth. The rolls should not touch each other.
The Mixing.—The proportions are:
which should make about 380 rolls of the ordinary "Kaiser semmel" size. The milk and water in equal parts are first mixed and allowed to come to the usual temperature of a kitchen, and a small amount of flour is then mixed in it so as to make a thin emulsion. The yeast is added and well mixed in, first crumbling it in the hand, and the pan is left covered for three-quarters of an hour. Then the rest of the flour is slowly mixed in, with thorough kneading. The dough is left for two hours and a half, "at the end of which time it presents a smooth, tenacious, puffed, homogeneous mass, of slightly yellowish color." It is weighed into pound masses (all bread must be sold by weight in Europe), each of which is cut into twelve rolls. The proportions for twelve rolls should therefore be about as follows: 1-4 pound of flour, 1-5 pints milk and water, 1-10 ounce pressed yeast, and 1-32 ounce of salt. The small masses of dough have a thickness of three-quarters of an inch, and the workman, laying the back of his left forefinger in the centre of one, pulls out and folds up the corners of the irregular mass, and pinches them together. The little lump of dough is then reversed upon a smooth board, and after remaining there long enough to finish "rising," they are placed in the hot oven by means of a wooden shovel.
The Yeast.—Pressed yeast, which is now made in America, is obtained by skimming the froth from mash while it is in active fermentation. The yeast is repeatedly washed with cold water until it settles pure and white in the water. It forms a tenacious mass which is pressed in a bag. It will keep about eight days in summer, and indefinitely if put on ice.
The Flour.—Only a selected part of the flour is used in Vienna for the manufacture of white bread and rolls, amounting to about forty-five per cent. of the wheat. Precisely the same grades are not produced in the American process of milling, but Dr. Horsford thinks that good, fresh middlings flour will compare favorably with the average Hungarian flour.
The Milling.—A peculiar mode of milling wheat has grown up in Austria and Hungary, which is almost the antipodes of the old and crude methods of grinding. It is called "high milling," and consists in cracking the wheat by successive operations down to the required size. First the wheat is run through a coarse mill, which takes off the beard at one end and the germ at the other. The resulting powder is then sifted, to separate the grits from the dross and flour, and the central part is again cracked, and the products sifted. Some flour is produced in each of these steps, but the best of the wheat kernel is still in the condition of grits, and the bran and outer coat of the kernel having been separated by the sifting, the pure grits are now cracked once more, and number one flour is produced. All the other flour from these three operations is purified from bran, mixed and ground, making number two flour. In short, the essential characteristic of the Austrian system of milling lies in a gradual process of reducing the wheat, with careful separation of the products, or cleaning, at each step. These products are quite numerous, as the following list shows:
This chicken feed consists of the foreign seeds, the tares, which grow up with the wheat, and which are separated before milling. In the above list only 39 to 40 per cent. of the flour is fit for white bread making.
The Wheat.—Last of all, in following back the processes of Vienna bread making, we come to one of the essential requirements, a proper kind of wheat. "The virtues of this bread," says Dr. Horsford, "had their origin principally in the Hungarian wheat. These are not due to any particular variety of wheat, or to any marked peculiarity of soil or mode of fertilizing, or to a mean annual temperature characterizing the climate of Hungary as a whole, but toa peculiarity of climate, uniting especial dryness of the air during the hot season, from the time of the development of the milk of the berry, through the period of its segregation of the various constituents of the grain, down to its being housed for thrashing." The Hungarian wheat is red, shrivelled, and hard, and it is this hardness that fits it so well to the successive crackings which constitute the process of "high milling."
Vienna bread is white, fine grained, perfectly sweet, aromatic, agreeable without butter, thoroughly baked, and has a tender crust, and Dr. Horsford shows dearly that this combination of excellences is not the result of an art, but of the joint operation of many arts. Its introduction may be made an economical act, for its peculiar succulence makes butter or other condiment unnecessary. It is, however, essentially abaker'sbread, for it should be eaten on the day it is made, and is at its best immediately after becoming cold. There is little room for expecting it to replace the kind of bread in vogue in American homes, for that is just as much the result of peculiar circumstances as the product of the Hungarian farm, the Austrian mill, and the Vienna oven. Economy in labor is just as much a consideration in most American families as it is in our workshops, and the semi-weekly or weekly baking is the means by which it is obtained. But American housewives can improve their bread by adopting from the Austrian system the whitening of the yeast by washing, the small loaf, and the rapid baking. The use of selected flour can hardly be obtained unless the millers are offered a market for the darker flour that remains. In Europe that is at hand in the nutritious "black" bread which is everywherethestaff of life, white bread being a luxury taken only with coffee. In fact it is American cake that the Vienna roll comes in competition with, and the habit of making cake almost daily, which obtains in so many American homes, shows that there is time and labor which can be turned to the production of the Vienna bread if desired.
MODERN LOSS IN WARFARE.
The German government has just published the official statistics of the losses in the war with France. The total killed and wounded was 3,919 officers and 60,978 men. The killed and dead of wounds were 1,374 officers and 16,877 men, the proportion being 1 killed to 3.44 wounded among the officers, and 1 to 5 among the men. The infantry lost 57,943, artillery 4,266, and cavalry 2,236. Fighting in line, and at such a distance as modern weapons command, have made the loss by artillery a minimum; 5,084 of the casualties being due to artillery and 55,862 to rifle practice. One noteworthy item is the proportion—12,717 out of the whole number—that were struck about the head and shoulders. This is held to show that the French troops fired high, but it may also be due to the attention now paid to field defences. It is quite possible also that all modern rifles are sighted a trifle too high.
A NEW TREASURY RULE.
The Secretary of the Treasury has lately issued a circular which affects rather uncomfortably the interests of educational, scientific, and literary institutions. They are allowed by law to import books, instruments, and illustrative collections free of duty, and the Secretary now says that the sale or distribution of articles imported in this way will not be allowed. They must be retained in the institutions that bring them into the country. It is quite probable that advantage has sometimes been taken of the law's liberality in this respect, but we fear this circular will really defeat the purpose of the law. Collections of all kinds in colleges and schools are kept up by a system of exchange, which is very necessary to them on account of the small sums of money at their disposal. To break up this system in the case of European specimens would be especially hard, for each institution would then be forced to import single specimens at much greater cost and trouble; or what is more likely, it would be found cheaper to pay the duty; that is, purchase through a dealer. So long as the exchange is confined to the circle of institutions which the law was designed to benefit, we cannot see that its provisions are unduly taken advantage of.
A HYGIENIC SCHOOL.
Dr. Agnew, the celebrated oculist of New York, has indicated his idea of a school for little children, in which health should be a first consideration, as follows: "If we could effect some alterations in the style of school architecture in our school houses, especially the primary departments, it would be a great desideratum. One of the greatest evils at present existing is the method of constructing the school room and of conducting the same. I never could understand why children of the primary age are kept sitting on benches for a large number of hours at a time. School houses ought to be built like the hospital building at the corner of Lexington avenue and Forty-second street, used for cripples, where there is in the upper story a large room, called the solarium, which is in fact a large play room, exposed to the sun, where these little ones are kept the greater part of the time. The upper story of the school houses should be so constructed; and children should be encouraged to bring their toys and playthings with them; and then, instead of changing the age of admission from four years, it might be kept as it is; and instead of shortening the hours of attendance, lengthen them. Of course it should be taken for granted that the school house is constructed for the accommodation of the poor children, and in this light it would be better that such children should spend most of the day in school houses having good sanitary conditions, rather than, as they now do, in tenement houses. Thus you would have these primary schools with plenty of air and light, which you can get in the upper story, and children would be glad to come early, and remain until three or four o'clock, or even later in the afternoon."
MICROSCOPIC COMPARISON OF BLOOD CORPUSCLES.
Dr. J. G. Richardson of Philadelphia, whose views upon the subject of proving blood stains by the use of the microscope have been described in this Miscellany, has lately prepared slides for the microscope so as to show blood corpuscles from two different animals on the same field. He did this by flowing two drops of blood down the slide, and nearly in contact. Dr. C. L. Mees has modified this proceeding. He spreads the blood by Johnston's method, which is to touch a drop of blood to the accurately ground edge of a slide, and then draw it gently over the face of the other slide, leaving a beautifully spread film. In this way one kind of blood is spread upon the slide, and another on the cover. When dry, one half of each is carefully scraped off with a smoothly sharpened knife, and the cover inverted upon the slide in such position as to bring the remaining portions of the film into apposition. When thus prepared the magnified image can be photographed.
THE SUMMER SCIENTIFIC SCHOOLS.
The Peabody Academy of Science at Salem, Massachusetts, will open the second session of its summer school of biology July 6, the course to continue for six weeks. Four days in each week will be given to lectures and laboratory work, and one day to a dredging expedition. Entomology, together with spiders, crustacea, and vertebrate anatomy, will be the especial subjects of study this year, and as usual the advantages enjoyed by this institution for studying marine zoology will be fully utilized. Dr. A. S. Packard, assisted by Messrs. Emerton and Kingsley, will have charge of zoölogy, Mr. Robinson of botany, Rev. Mr. Bolles of microscopy, and Mr. Cooke of the dredging parties. Fees, $15, or for lectures only, $5. Board $5 to $7 weekly. Application should be made to Dr. Packard.
A four weeks' school will be opened at the State normal school, West Chester, Pennsylvania, beginning July 11. Zoölogy and botany will be taught by Prof. M. W. Harrington, geology and physiological chemistry by Mr. V. C. Vaughan, and mineralogy by George G. Groff, all these gentlemen being connected with the University of Michigan. Elocution and industrial drawing will also be taught. Fees are for board and tuition $30, and tuition alone $12. Apply to Mr. George L. Maris, principal.
Scientific excursions seem to be the order of the day. Mr. Woodruff of Detroit has planned one to make the tour of the world; and Mr. J. B. Steere of Michigan university, who spent several years in a journey of scientific character, says: "The expedition will probably leave New York in October or November next, going directly to the mouth of the Amazon, where some time will be spent in making collections in natural history. The island of Marajo will be the principal field for this work. Rio Janeiro will probably be called in at, on the way to the Straits of Magellan, which will be reached in January or February (the summer season there), and a stay will be made for the purpose of collecting. The expedition will then make its way northwest, cruising among several of the rarely visited groups of islands in the central Pacific, where there is every opportunity for making large and valuable collections of sea shells and corals as well as of the myriads of other and rarer things brought up by the dredge. Some stay will probably be made in New Guinea; but the next great object of interest will be the island of Borneo. It is supposed that the northeast and central part of this great island, which are the parts still unknown, can be best reached through the assistance of the Dutch traders at Macassar on the island of Celebes, where the expedition will touch on its way. It seems probable that entering from the east side, with the proper guides and interpreters, the interior of the island can be reached and explored, and perhaps a party may be able to reach the west coast. Borneo is less known than Central Africa, and there is a grand opportunity here for Americans to solve the great problem of its interior lakes and plateaus. A journey through an unexplored country like this cannot fail also to give opportunity for collecting many new species of animals and plants. From Borneo the expedition will make its way to the Philippine islands, where there is great room still for discovery, not only in natural history, but also in fixing the geographical knowledge of the islands, which is at present very faulty. Several of the larger islands of the group are entirely unknown in respect to their animal and vegetable life. From the Philippines the expedition will go to the island of Formosa, off the coast of China. This island is rich in objects of interest to the naturalist, and the east and central parts of the island are unknown. There are Chinese traders who visit the west coast for the purpose of trade with the natives, and through their help there is no doubt that much new work can be done in that locality. The expedition will then visit Canton, and some others of the coast towns of China, and begin its return voyage by way of Singapore, which is a depot for all that is rare and curious in the East. Ceylon will then be touched at, and the expedition will pass through the Red sea and Suez canal. It is intended to spend some time in the Mediterranean in visiting various places of interest, and to return home by way of England. The voyage is expected to occupy two years' time, and to cost students $2,500 per year, this sum paying costs of expeditions inland and everything except personal expenses, clothing, etc. All the collections made will belong to those who make them." This plan seems to follow about the same line as Mr. Steere's own journey, and it would certainly be a great advantage to the excursionists to be under the guidance of an explorer who has so lately been over the ground. We believe the company is nearly completed.
A similar trip is proposed in France, where a society supported by the liberality of M. Bischofsheim, the well known banker, has been formed for the purpose of encouraging periodical voyages. The travellers will be scientific men, Dwuyn l'Lhuys being at their head, and as in the American expedition, the vessel will be commanded by a naval officer. The first voyage will be from Marseilles, and will occupy less than a year, the line of travel being to America and India.
THE WAGES VALUE OF STEAM POWER.
Prof. Leone Levi, in a lecture to workingmen on "Work and Wages," estimated the amount of capital required to carry on some of the industries in Great Britain. There are 20,000,000 acres of land cultivated, which at £8 is £160,000,000. The cotton trade requires £80,000,000, wool trade £30,000,000, iron trade £30,000,000, merchant marine £70,000,000; railways have £600,000,000 invested in them, and the waterworks, gasworks, docks, and other undertakings all call for similar vast sums. Construction may be considered as the fixation of work, and here we have about a thousand million pounds worth of fixed labor. Labor in use deals with figures and values that are quite as large. The annual industrial production of France is £480,000,000, and of this £200,000,000 is labor, the remainder beingcalledmaterial, though if the items of its cost were ascertained, current labor would be found to make up a great portion of that sum also.
But taking French manufactures as they are reported, we can obtain from them an estimate of the value of machines. The first steam engine was introduced into that country by the city of Paris in 1789, the year of revolution. At that time the cost of labor in manufactures was 60 per cent. and of material 40 per cent. of the whole cost. On this basis the £280,000,000 worth of material used now would require £420,000,000 of labor to work it up. The present industrial population of France is 8,400,000, though all are not fully effective, and on the old basis this would have to be increased to 17,640,000 persons. The other divisions of population, tradesmen, etc., would also increase, and the result is finally apparent that France is not large enough to contain and raise food for the people that would be needed to carry on the modern business on the old methods. Themanpower of the steam machinery introduced into the industries is estimated at 31,500,000, and as it replaces £220,000,000 worth of labor, we may reckon the wages of a steam man power at £7, or $35, per year, exclusive of food (fuel) and lodging.
THE NEGRO'S COLOR.
The chemical character of the coloring matter in the negro's skin has been investigated by Dr. F. P. Floyd, in the laboratory of the University of Virginia. Strips of skin were well washed with water and alcohol, in order to remove fatty matter, and then cautiously scraped with a blunt scalpel, to loosen up the pigment granules. This must be carefully done, for an examination of the scraped skin shows that the whole substance of the cuticular tissue may easily be broken up and mingled with the pigment, which cannot then be obtained pure. But by selecting the most strongly colored parts and treating them carefully, the following points were established: The coloring matter is insoluble in water, alcohol, and ether. It is also unaffected by dilute acids or dilute solutions of alkali. The strong acids, even concentrated nitric acid, attack it but slowly. Chlorine destroys it especially in presence of alkali. Heated for some time with a strong solution of sodium hydrate, it is gradually dissolved, and from the diluted solution it may be partially precipitated on neutralization with an acid. The ash of the negro skin gave twice as much ash as the white skin, or 2.4 per cent. against 1.15 per cent. Analyses of the ash for iron showed 2.28 per cent. of metallic iron in the black and 1.21 per cent. in the white skin. These facts confirm the general impression that the color of the negro's skin is nearly allied to the "melanin," or black pigment of the choroid coat in the eye. Both seem to be products of alteration of the blood.
This pigment appears to be similar to or identical with the black coloring matter of feathers. When perfectly white hair or feathers are heated gently with dilute sulphuric acid, they dissolve completely, though slowly. Black or brown feathers leave an insoluble residue. This subject was lately presented to the London Chemical Society by Messrs. W. R. Hodgkinson and H. C. Sorby. They took feathers of the English rook, which contain one per cent. of pigment, and having cut the vanes from the central rib, cleaned them from fat by treatment with alcoholic ammonia. Warm dilute sulphuric acid was then applied, until it was no longer colored, and the residue was treated with dilute hydrochloric acid and boiling alcohol and ether. Black pigment is usually found in black, brown, and dark red hair, but in the latter it is associated with a brown pigment that is soluble in dilute sulphuric acid.
Experiments were made by Dr. Floyd to determine the position of the pigment in the negro's skin. Many Southern physicians are under the impression that a blister upon the black skin is white, or nearly so. But this was disproved by experiment, and the microscope showed that the granules were dispersed through the whole of the cuticle, though less dense at the surface than in the deeper tissues. In fact Dr. Floyd thinks that the pigment originates in the outer layer of true skin, "its production being probably connected with the loss of vitality of the cells, and that it accompanies those cells all the way to the surface, where it is mechanically removed by desquamation." The alteration of the red blood corpuscles to black pigment may be due to feeble circulation in the superficial capillaries. The diseases of negroes, and their extreme sensitiveness to low temperatures, sustain this view.
The jurisdiction of London extends over 756 square miles; its area embraces 78,000 acres. It contains 4,000,000 of inhabitants, increasing at the rate of 75,000 a year, of various nationalities.
The rapidity of sewing machine work, even when not working beyond an ordinary manufacturing speed, is seen in the manufacture of 110 three-bushel sacks per hour, containing 35,640 stitches, or close on 600 per minute.
The pine woods of Michigan are said to contain in standing trees—
A manufacturer lately sued the city of Paris for about $15,000 on the ground that the water supplied by the new works was so good that he could not make gelatine, and his business was therefore ruined! The suit was dismissed with costs.
A paste made of fifty-one parts of finely shaved stearine, melted in seventy-two parts of previously warmed oil of turpentine, will restore the polish to furniture. When cool rub on with a woollen rag, and when dry rub thoroughly with a clean dry cloth.
This winter is said to have been the coldest known in Russia for 153 years! In St. Petersburg the thermometer has been -32 deg. Reaumur, or 40 deg. below zero, Fahrenheit. Drivers have frozen in their seats, and the police kept large fires burning in the streets at night.
The difference between exploding powder under water and above ground is shown in the relative effect of 50,000 pounds of giant powder fired in the great Hell Gate blast, and the small quantity of 370 pounds of black powder which is the service charge of the 80-ton cannon at Shoebury, England. The former made but little shock or sound. The latter has shaken houses to pieces by the force of the concussion wave produced in the air. The first blood shed by the gun was that of a half dozen sea gulls. A canister shot, containing 2,170 balls, burst just in front of a large flock of them.
The United States issued 15,911 patents in 1876, and received 22,408 applications.
Important works in construction and other branches of engineering are now sometimes continued at night by means of the electric light. The buildings for the French international exhibition are pushed in this way, and the method is used at the Taybridge Works and others in England.
Among the interesting facts which have been developed by the careful study of ants is the existence of piracy among them. Mr. McCook has noticed that ants descending from trees with abdomens full of honey dew were waited for by workers from the hill, seeking food, and compelled to disgorge their accumulations. If this was not done willingly, force was used.
The walrus has a singular mode of adapting his attack upon enemies to the circumstances in which he is placed. They can shiver ice from four to six inches thick by rising from below and striking it with their huge heads. An exploring party near Novaya Zemla, while walking over a field of new ice, noticed a herd of walruses following them under the ice. They presently began operations, and broke the field in pieces on all sides of the party, which barely escaped by running for the main pack ice near by.
Oxford university, England, has a revenue of about $2,000,000 yearly, 43 professors, 160 lecturers and tutors, 2,400 undergraduates (1875), of whom 24 per cent. hold scholarships worth from $150 to $500 yearly. Seventy-five per cent. of these read for honors as follows: 33 per cent. for the school of Literæ Humaniores (philosophy, classical history, and philology), 20 per cent. for the school of modern history, 17 per cent. theology, 15 per cent. law, 7 per cent. mathematics, and 6.5 per cent. physical science. There are 360 fellows, of whom 140 are resident and engaged in teaching. The average endowment of a fellowship is $1,250. The average number of pupils to one professor or teacher is in Literæ Humaniores 5 1-2; in mathematics 6, in physical science 7, in modern history 5, in law 15 1-2.
Prof. von Zech lately mingled politics and science in a paper read before the Wurtemburg Anthropological Society. He compared the returns of a recent election with the known ethnological characteristics of the kingdom of Wurtemburg, and found that in districts where light hair and eyes predominated the government won the election. The black-haired and black-eyed portions of the population seemed to favor democracy and social reform, and the Ultramontanes form a medium class so far as complexion is concerned.
The misfortunes of the deaf and dumb are greatly lessened by the substitution of lip-reading for other modes of conversation. The words are read from the movement of the lips so that the deaf can join in an ordinary conversation. In beginning the instruction the lips must be moved slowly, but in time the pupil gains such facility that the words of a public speaker can be taken as well by a deaf person in the audience as by any other. Deaf mutes are frequently very intelligent, and it may be that the "kindergarten" system, which is a necessity in their case, has something to do with their proficiency. In the Clark Institute children are received at the age of five years, and the first year's instruction consists in laying sticks and rings in designs imitated from the teacher. Weaving, card pricking, and drawing are also taught. From this beginning the pupil's development goes on through physical studies, such as zoölogy, botany, physiology, and geography. After these come higher mathematics, geology, chemistry, history, psychology, etc.