Q.Why candeafpeople hear through anear trumpet?A. The ear trumpet restrainsthe spread of the voice, and limits thediameter of the sound-waves; in consequence of which, theirstrengthis increased.
Q.Why candeafpeople hear through anear trumpet?
Q.Why candeafpeople hear through anear trumpet?
A. The ear trumpet restrainsthe spread of the voice, and limits thediameter of the sound-waves; in consequence of which, theirstrengthis increased.
A. The ear trumpet restrainsthe spread of the voice, and limits thediameter of the sound-waves; in consequence of which, theirstrengthis increased.
Q.Why aremountainssonoiselessand quiet?A. Because the air of mountains isvery rarefied; and as the air becomesrarefied, sound becomes lessintense.
Q.Why aremountainssonoiselessand quiet?
Q.Why aremountainssonoiselessand quiet?
A. Because the air of mountains isvery rarefied; and as the air becomesrarefied, sound becomes lessintense.
A. Because the air of mountains isvery rarefied; and as the air becomesrarefied, sound becomes lessintense.
Q.How do you know that theraretyof airdiminishesthe intensity ofsound?A. If a bell be rung in the receiver of an air-pump, the sound becomesfainter and fainteras the air is exhausted, till at last it is quiteinaudible.
Q.How do you know that theraretyof airdiminishesthe intensity ofsound?
Q.How do you know that theraretyof airdiminishesthe intensity ofsound?
A. If a bell be rung in the receiver of an air-pump, the sound becomesfainter and fainteras the air is exhausted, till at last it is quiteinaudible.
A. If a bell be rung in the receiver of an air-pump, the sound becomesfainter and fainteras the air is exhausted, till at last it is quiteinaudible.
Q.What is the cause ofecho?A. Whenever a sound-wave strikes against anyobstacle(such as a wall or hill),it is reflected(or thrown back); and thisreflected soundis called anecho.The same laws govern echo as light. (See p.370.)
Q.What is the cause ofecho?
Q.What is the cause ofecho?
A. Whenever a sound-wave strikes against anyobstacle(such as a wall or hill),it is reflected(or thrown back); and thisreflected soundis called anecho.The same laws govern echo as light. (See p.370.)
A. Whenever a sound-wave strikes against anyobstacle(such as a wall or hill),it is reflected(or thrown back); and thisreflected soundis called anecho.
The same laws govern echo as light. (See p.370.)
Q.What places are mostfamousforechoes?A. Caverns, grottoes, and ruined abbeys; the areas of antique halls; the windings of long passages; the aisles of cathedral churches; mountains, and ice-bergs.
Q.What places are mostfamousforechoes?
Q.What places are mostfamousforechoes?
A. Caverns, grottoes, and ruined abbeys; the areas of antique halls; the windings of long passages; the aisles of cathedral churches; mountains, and ice-bergs.
A. Caverns, grottoes, and ruined abbeys; the areas of antique halls; the windings of long passages; the aisles of cathedral churches; mountains, and ice-bergs.
Q.Why are caverns, grottoes, and ruined abbeysfamousforechoes?A. 1st—Because the sound-waves cannot passbeyondthe cavern or grotto, andmust flow back:2ndly—Thereturn waves(being entangled by the cavern) aredetainedfor a short time, and comedeliberatelyto the ear.
Q.Why are caverns, grottoes, and ruined abbeysfamousforechoes?
Q.Why are caverns, grottoes, and ruined abbeysfamousforechoes?
A. 1st—Because the sound-waves cannot passbeyondthe cavern or grotto, andmust flow back:2ndly—Thereturn waves(being entangled by the cavern) aredetainedfor a short time, and comedeliberatelyto the ear.
A. 1st—Because the sound-waves cannot passbeyondthe cavern or grotto, andmust flow back:
2ndly—Thereturn waves(being entangled by the cavern) aredetainedfor a short time, and comedeliberatelyto the ear.
Q.Why are antique halls, winding passages, and cathedral aislesfamousforechoes?A. Because the sound-wavescannot flow freely forward, but strike against the winding walls perpetually, and are beatenback.
Q.Why are antique halls, winding passages, and cathedral aislesfamousforechoes?
Q.Why are antique halls, winding passages, and cathedral aislesfamousforechoes?
A. Because the sound-wavescannot flow freely forward, but strike against the winding walls perpetually, and are beatenback.
A. Because the sound-wavescannot flow freely forward, but strike against the winding walls perpetually, and are beatenback.
Q.Why aremountainsand ice-bergsfamousforechoes?A. Because they present abarrierto the sound-waveswhich they cannot pass; and are sufficiently elastic tothrow them back.
Q.Why aremountainsand ice-bergsfamousforechoes?
Q.Why aremountainsand ice-bergsfamousforechoes?
A. Because they present abarrierto the sound-waveswhich they cannot pass; and are sufficiently elastic tothrow them back.
A. Because they present abarrierto the sound-waveswhich they cannot pass; and are sufficiently elastic tothrow them back.
Q.Why do not the walls of aroomor church produceecho?A. Because sound travels with suchvelocity, that the echo isblended with the original sound, and produce butone impressionon the ear.Sound travels 13 miles in a minute.
Q.Why do not the walls of aroomor church produceecho?
Q.Why do not the walls of aroomor church produceecho?
A. Because sound travels with suchvelocity, that the echo isblended with the original sound, and produce butone impressionon the ear.Sound travels 13 miles in a minute.
A. Because sound travels with suchvelocity, that the echo isblended with the original sound, and produce butone impressionon the ear.
Sound travels 13 miles in a minute.
Q.Why do verylargebuildings (as cathedrals), oftenreverberatethe voice of the speaker?A. Because the walls areso far off from the speaker, that the echo does notget back in timeto blend with the original sound; and, therefore,eachis heard separately.
Q.Why do verylargebuildings (as cathedrals), oftenreverberatethe voice of the speaker?
Q.Why do verylargebuildings (as cathedrals), oftenreverberatethe voice of the speaker?
A. Because the walls areso far off from the speaker, that the echo does notget back in timeto blend with the original sound; and, therefore,eachis heard separately.
A. Because the walls areso far off from the speaker, that the echo does notget back in timeto blend with the original sound; and, therefore,eachis heard separately.
Q.Why dosomeechoes repeat onlyonesyllable?A. Thefurtherthe echoing body isdistant, themore soundit willreflect. If, therefore, the echoing body benear, it will repeat but one syllable.
Q.Why dosomeechoes repeat onlyonesyllable?
Q.Why dosomeechoes repeat onlyonesyllable?
A. Thefurtherthe echoing body isdistant, themore soundit willreflect. If, therefore, the echoing body benear, it will repeat but one syllable.
A. Thefurtherthe echoing body isdistant, themore soundit willreflect. If, therefore, the echoing body benear, it will repeat but one syllable.
Q.Why does anechosometimes repeattwoor more syllables?A. Because the echoing body isfar off; and, therefore, there is time for one reflectionto pass awaybeforeanotherreaches the ear.
Q.Why does anechosometimes repeattwoor more syllables?
Q.Why does anechosometimes repeattwoor more syllables?
A. Because the echoing body isfar off; and, therefore, there is time for one reflectionto pass awaybeforeanotherreaches the ear.
A. Because the echoing body isfar off; and, therefore, there is time for one reflectionto pass awaybeforeanotherreaches the ear.
Q.Why dowindows rattlewhencartspass by a house?A. 1st—Glass issonorous; and the air communicates its vibrations to the glass, which echoes the same sound: and2ndly—Thewindow-frame is shakenby the sound-wavesimpinging against the window, and contributes to the noise.
Q.Why dowindows rattlewhencartspass by a house?
Q.Why dowindows rattlewhencartspass by a house?
A. 1st—Glass issonorous; and the air communicates its vibrations to the glass, which echoes the same sound: and2ndly—Thewindow-frame is shakenby the sound-wavesimpinging against the window, and contributes to the noise.
A. 1st—Glass issonorous; and the air communicates its vibrations to the glass, which echoes the same sound: and
2ndly—Thewindow-frame is shakenby the sound-wavesimpinging against the window, and contributes to the noise.
Q.Why do thebubblesin acup of tearange round thesidesof thecup?A. Because the cupattracts them.
Q.Why do thebubblesin acup of tearange round thesidesof thecup?
Q.Why do thebubblesin acup of tearange round thesidesof thecup?
A. Because the cupattracts them.
A. Because the cupattracts them.
Q.Why do all thelittle bubblestend towards thelargeones?A. Because the large bubbles (being the superior masses)attract them.
Q.Why do all thelittle bubblestend towards thelargeones?
Q.Why do all thelittle bubblestend towards thelargeones?
A. Because the large bubbles (being the superior masses)attract them.
A. Because the large bubbles (being the superior masses)attract them.
Q.Why do thebubblesof acup of tea followatea-spoon?A. Because the tea-spoonattracts them.
Q.Why do thebubblesof acup of tea followatea-spoon?
Q.Why do thebubblesof acup of tea followatea-spoon?
A. Because the tea-spoonattracts them.
A. Because the tea-spoonattracts them.
Q.Why are thesidesof a pond covered withleaves, while themiddleof the pond is quiteclear?A. Because the shoreattractsthe leaves to itself.
Q.Why are thesidesof a pond covered withleaves, while themiddleof the pond is quiteclear?
Q.Why are thesidesof a pond covered withleaves, while themiddleof the pond is quiteclear?
A. Because the shoreattractsthe leaves to itself.
A. Because the shoreattractsthe leaves to itself.
Q.Why do all fruits, &c. (when severed from the tree)fallto theearth?A. Because the earthattracts them.
Q.Why do all fruits, &c. (when severed from the tree)fallto theearth?
Q.Why do all fruits, &c. (when severed from the tree)fallto theearth?
A. Because the earthattracts them.
A. Because the earthattracts them.
Q.Why do persons (who waterplants) veryoften pour the water into thesaucer, and notovertheplants?A. Because the water in the saucer issupped upby the mould (through the hole at the bottom of the flower-pot), and is transferred to the stem and leaves of the plant bycapillary attraction, (See p.84).
Q.Why do persons (who waterplants) veryoften pour the water into thesaucer, and notovertheplants?
Q.Why do persons (who waterplants) very
often pour the water into thesaucer, and notovertheplants?
A. Because the water in the saucer issupped upby the mould (through the hole at the bottom of the flower-pot), and is transferred to the stem and leaves of the plant bycapillary attraction, (See p.84).
A. Because the water in the saucer issupped upby the mould (through the hole at the bottom of the flower-pot), and is transferred to the stem and leaves of the plant bycapillary attraction, (See p.84).
Q.Why is vegetation on themarginof arivermoreluxuriantthan in an openfield?A. Because the porous earth on the banksups up waterto the roots of the plants bycapillary attraction.
Q.Why is vegetation on themarginof arivermoreluxuriantthan in an openfield?
Q.Why is vegetation on themarginof arivermoreluxuriantthan in an openfield?
A. Because the porous earth on the banksups up waterto the roots of the plants bycapillary attraction.
A. Because the porous earth on the banksups up waterto the roots of the plants bycapillary attraction.
Q.Why is alumpofsugar(left at the bottom of a cup) solonginmelting?A. Becauseas it melts, it makes the tea above itheavier; and (so long as it remains at the bottom) is surrounded by tea fullysaturatedwith sugar; in consequence of which, thesameportions of liquid will holdno more sugar in solution.
Q.Why is alumpofsugar(left at the bottom of a cup) solonginmelting?
Q.Why is alumpofsugar(left at the bottom of a cup) solonginmelting?
A. Becauseas it melts, it makes the tea above itheavier; and (so long as it remains at the bottom) is surrounded by tea fullysaturatedwith sugar; in consequence of which, thesameportions of liquid will holdno more sugar in solution.
A. Becauseas it melts, it makes the tea above itheavier; and (so long as it remains at the bottom) is surrounded by tea fullysaturatedwith sugar; in consequence of which, thesameportions of liquid will holdno more sugar in solution.
Q.Why does thelumpofsugar meltmorequicklywhenstirred about?A. Becausefresh portions of unsaturated teakeep coming in contact with the lump, and soon dissolve it.
Q.Why does thelumpofsugar meltmorequicklywhenstirred about?
Q.Why does thelumpofsugar meltmorequicklywhenstirred about?
A. Becausefresh portions of unsaturated teakeep coming in contact with the lump, and soon dissolve it.
A. Becausefresh portions of unsaturated teakeep coming in contact with the lump, and soon dissolve it.
Q.Why does apiece of sugar(held in a spoon at thetopof our tea) melt veryrapidly?A. Because as the tea becomessweetened, itdescends to the bottom of the cupby its own gravity; andfreshportions of unsweetened tea are brought constantly into contact with the sugar, till the lump is entirely dissolved.
Q.Why does apiece of sugar(held in a spoon at thetopof our tea) melt veryrapidly?
Q.Why does apiece of sugar(held in a spoon at thetopof our tea) melt veryrapidly?
A. Because as the tea becomessweetened, itdescends to the bottom of the cupby its own gravity; andfreshportions of unsweetened tea are brought constantly into contact with the sugar, till the lump is entirely dissolved.
A. Because as the tea becomessweetened, itdescends to the bottom of the cupby its own gravity; andfreshportions of unsweetened tea are brought constantly into contact with the sugar, till the lump is entirely dissolved.
Q.How can asick roombe keptfreefrom unhealthyeffluvia?A. Vinegar boiled with myrrh, or camphor, sprinkled in a sick room, willentirely correct putridity.
Q.How can asick roombe keptfreefrom unhealthyeffluvia?
Q.How can asick roombe keptfreefrom unhealthyeffluvia?
A. Vinegar boiled with myrrh, or camphor, sprinkled in a sick room, willentirely correct putridity.
A. Vinegar boiled with myrrh, or camphor, sprinkled in a sick room, willentirely correct putridity.
Q.Why doeslimedestroy the offensive smells ofbins,sewers, &c.?A. Because it combines with thecarbonic acidof these places, and converts it intocarbonate of lime, which is entirelyfree from smell.
Q.Why doeslimedestroy the offensive smells ofbins,sewers, &c.?
Q.Why doeslimedestroy the offensive smells ofbins,sewers, &c.?
A. Because it combines with thecarbonic acidof these places, and converts it intocarbonate of lime, which is entirelyfree from smell.
A. Because it combines with thecarbonic acidof these places, and converts it intocarbonate of lime, which is entirelyfree from smell.
Q.Why doeschlorideoflimefumigate a sick room?A. Because the chlorine absorbs thehydrogen of the stale air; and by this means removes both theoffensive smelland theinfectionof a sick room.
Q.Why doeschlorideoflimefumigate a sick room?
Q.Why doeschlorideoflimefumigate a sick room?
A. Because the chlorine absorbs thehydrogen of the stale air; and by this means removes both theoffensive smelland theinfectionof a sick room.
A. Because the chlorine absorbs thehydrogen of the stale air; and by this means removes both theoffensive smelland theinfectionof a sick room.
Q.How can thetaintofmeatbe removed?A. Either by washing withpyroligneous acid,—covering it for a few hours with commoncharcoal,—or by putting afew lumps of charcoalinto thewater in which it is boiled.
Q.How can thetaintofmeatbe removed?
Q.How can thetaintofmeatbe removed?
A. Either by washing withpyroligneous acid,—covering it for a few hours with commoncharcoal,—or by putting afew lumps of charcoalinto thewater in which it is boiled.
A. Either by washing withpyroligneous acid,—covering it for a few hours with commoncharcoal,—or by putting afew lumps of charcoalinto thewater in which it is boiled.
Q.Why do these thingsdestroythetaintof meat?A. Because theycombinewith theputrescent particles, and neutralize their offensive taste and smell.
Q.Why do these thingsdestroythetaintof meat?
Q.Why do these thingsdestroythetaintof meat?
A. Because theycombinewith theputrescent particles, and neutralize their offensive taste and smell.
A. Because theycombinewith theputrescent particles, and neutralize their offensive taste and smell.
Q.Why shouldbed-rooms,cottages,hospitals, andstables, be washed occasionally withlime-white?A. Because the limeis very caustic, and removes all organic matters adhering to the walls.
Q.Why shouldbed-rooms,cottages,hospitals, andstables, be washed occasionally withlime-white?
Q.Why shouldbed-rooms,cottages,hospitals, andstables, be washed occasionally withlime-white?
A. Because the limeis very caustic, and removes all organic matters adhering to the walls.
A. Because the limeis very caustic, and removes all organic matters adhering to the walls.
Q.How canmouldinessbe prevented?A. The perfume ofany essential oilwill prevent mouldiness from ink, paste, preserves, &c.Alum, salt of amber, borax, nitre, salt, camphor, charcoal, and pyroligneous acid, are all excellent antiseptics.Salt, corrosive sublimates, copperas, and alum, all arrest the decay of timber. (See p.426.)
Q.How canmouldinessbe prevented?
Q.How canmouldinessbe prevented?
A. The perfume ofany essential oilwill prevent mouldiness from ink, paste, preserves, &c.
A. The perfume ofany essential oilwill prevent mouldiness from ink, paste, preserves, &c.
Alum, salt of amber, borax, nitre, salt, camphor, charcoal, and pyroligneous acid, are all excellent antiseptics.Salt, corrosive sublimates, copperas, and alum, all arrest the decay of timber. (See p.426.)
Alum, salt of amber, borax, nitre, salt, camphor, charcoal, and pyroligneous acid, are all excellent antiseptics.
Salt, corrosive sublimates, copperas, and alum, all arrest the decay of timber. (See p.426.)
Q.Why will strongSouchong tea poison flies?A. Because it producesprussic acid, which destroys theirnervous system.
Q.Why will strongSouchong tea poison flies?
Q.Why will strongSouchong tea poison flies?
A. Because it producesprussic acid, which destroys theirnervous system.
A. Because it producesprussic acid, which destroys theirnervous system.
Q.Why is stronggreen tea unwholesome?A. Because it containsprussic acid, which destroys thenervous system.
Q.Why is stronggreen tea unwholesome?
Q.Why is stronggreen tea unwholesome?
A. Because it containsprussic acid, which destroys thenervous system.
A. Because it containsprussic acid, which destroys thenervous system.
Q.Why is adeadmantallerthan a living man?A. Because at death thecartilagesarerelaxed. So, also, after a night’s rest, a man istallerthan when he went to bed.
Q.Why is adeadmantallerthan a living man?
Q.Why is adeadmantallerthan a living man?
A. Because at death thecartilagesarerelaxed. So, also, after a night’s rest, a man istallerthan when he went to bed.
A. Because at death thecartilagesarerelaxed. So, also, after a night’s rest, a man istallerthan when he went to bed.
Q.What issleep?A. Sleep is therest of the brainandnervous system.
Q.What issleep?
Q.What issleep?
A. Sleep is therest of the brainandnervous system.
A. Sleep is therest of the brainandnervous system.
Q.Why can we notsee, when we are asleep with oureyes open?A. Because the “RET´INAof the eye” isinactiveand at rest.
Q.Why can we notsee, when we are asleep with oureyes open?
Q.Why can we notsee, when we are asleep with oureyes open?
A. Because the “RET´INAof the eye” isinactiveand at rest.
A. Because the “RET´INAof the eye” isinactiveand at rest.
Q.Why can we nothearin sleep?A. Because the drum or “tympanumof the ear” is placid and at rest.
Q.Why can we nothearin sleep?
Q.Why can we nothearin sleep?
A. Because the drum or “tympanumof the ear” is placid and at rest.
A. Because the drum or “tympanumof the ear” is placid and at rest.
Q.Why can we nottastewhen we are asleep?A. Because the nervesat the end of the tongue(called papillæ) are inactive and at rest.
Q.Why can we nottastewhen we are asleep?
Q.Why can we nottastewhen we are asleep?
A. Because the nervesat the end of the tongue(called papillæ) are inactive and at rest.
A. Because the nervesat the end of the tongue(called papillæ) are inactive and at rest.
Q.Why can we notfeelwhen we are asleep?A. Because theends of the nerves(called papillæ), situated in the skin, are inactive and at rest.
Q.Why can we notfeelwhen we are asleep?
Q.Why can we notfeelwhen we are asleep?
A. Because theends of the nerves(called papillæ), situated in the skin, are inactive and at rest.
A. Because theends of the nerves(called papillæ), situated in the skin, are inactive and at rest.
Q.Why have persons in sleep nowillof their own, but may be moved at the will ofanyone?A. Because the “cerebellum” (orposteriorpart of the brain) is inactive and at rest.
Q.Why have persons in sleep nowillof their own, but may be moved at the will ofanyone?
Q.Why have persons in sleep nowillof their own, but may be moved at the will ofanyone?
A. Because the “cerebellum” (orposteriorpart of the brain) is inactive and at rest.
A. Because the “cerebellum” (orposteriorpart of the brain) is inactive and at rest.
Q.Why havedreamersno power ofjudgmentorreason?A. Because the “cerebrum” (orfrontof the brain) is inactive and at rest.
Q.Why havedreamersno power ofjudgmentorreason?
Q.Why havedreamersno power ofjudgmentorreason?
A. Because the “cerebrum” (orfrontof the brain) is inactive and at rest.
A. Because the “cerebrum” (orfrontof the brain) is inactive and at rest.
Q.Why aredreamssuchfoolishandinconsistentthings?A. Because the “pineal gland” is actingwithout the brain; and thefaculty of thinkingexists in the “pineal gland,” but thefaculty of judgmentin the “cerebrumof the brain.”The cerebrum of the brain occupies the top and front of the skull. Thepineal glandis a small conical gland (about the size of a pea)in the brain.
Q.Why aredreamssuchfoolishandinconsistentthings?
Q.Why aredreamssuchfoolishandinconsistentthings?
A. Because the “pineal gland” is actingwithout the brain; and thefaculty of thinkingexists in the “pineal gland,” but thefaculty of judgmentin the “cerebrumof the brain.”The cerebrum of the brain occupies the top and front of the skull. Thepineal glandis a small conical gland (about the size of a pea)in the brain.
A. Because the “pineal gland” is actingwithout the brain; and thefaculty of thinkingexists in the “pineal gland,” but thefaculty of judgmentin the “cerebrumof the brain.”
The cerebrum of the brain occupies the top and front of the skull. Thepineal glandis a small conical gland (about the size of a pea)in the brain.
Q.Why do some personsloseallpowerofsensation?A. Because the “cerebrum” (orfrontof their brain)has been injured.
Q.Why do some personsloseallpowerofsensation?
Q.Why do some personsloseallpowerofsensation?
A. Because the “cerebrum” (orfrontof their brain)has been injured.
A. Because the “cerebrum” (orfrontof their brain)has been injured.
Q.Why are many personsidiots?A. Because the “cerebellumof the brain”has been removedby some accident, orinjured by some disease.The cerebellum is all the posterior part of the brain.
Q.Why are many personsidiots?
Q.Why are many personsidiots?
A. Because the “cerebellumof the brain”has been removedby some accident, orinjured by some disease.The cerebellum is all the posterior part of the brain.
A. Because the “cerebellumof the brain”has been removedby some accident, orinjured by some disease.
The cerebellum is all the posterior part of the brain.
Q.Why does a personfeelwhen he istouched?A. The ends of certain nerves (calledPAPILLÆ) situated in the skinerect themselveswhen touched, and produce a nervous sensation calledfeeling.
Q.Why does a personfeelwhen he istouched?
Q.Why does a personfeelwhen he istouched?
A. The ends of certain nerves (calledPAPILLÆ) situated in the skinerect themselveswhen touched, and produce a nervous sensation calledfeeling.
A. The ends of certain nerves (calledPAPILLÆ) situated in the skinerect themselveswhen touched, and produce a nervous sensation calledfeeling.
Q.Why are persons able totaste different flavours?A. Because the “PAPILLÆ” of the tongue and palateerect themselveswhen food touches them, and produce a nervous sensation calledtaste.
Q.Why are persons able totaste different flavours?
Q.Why are persons able totaste different flavours?
A. Because the “PAPILLÆ” of the tongue and palateerect themselveswhen food touches them, and produce a nervous sensation calledtaste.
A. Because the “PAPILLÆ” of the tongue and palateerect themselveswhen food touches them, and produce a nervous sensation calledtaste.
Q.Why do veryoldpeoplelosethe power ofvolition,sensation, andthought?A. Because theirbrain ossifies; and as the “cerebrum” (orfrontof the brain) goes, they lose the power ofsensation and reason; and as the “cerebellum” (orposteriorpart of the brain) goes, they lose the power ofvolition.
Q.Why do veryoldpeoplelosethe power ofvolition,sensation, andthought?
Q.Why do veryoldpeoplelosethe power ofvolition,sensation, andthought?
A. Because theirbrain ossifies; and as the “cerebrum” (orfrontof the brain) goes, they lose the power ofsensation and reason; and as the “cerebellum” (orposteriorpart of the brain) goes, they lose the power ofvolition.
A. Because theirbrain ossifies; and as the “cerebrum” (orfrontof the brain) goes, they lose the power ofsensation and reason; and as the “cerebellum” (orposteriorpart of the brain) goes, they lose the power ofvolition.
Q.Why areoldpeopleunabletowalk?A. Because theirmuscles become rigid.
Q.Why areoldpeopleunabletowalk?
Q.Why areoldpeopleunabletowalk?
A. Because theirmuscles become rigid.
A. Because theirmuscles become rigid.
Acetic Acid, commonly called Distilled Vinegar.Citriccommonly called Juice of Lemons.Nitriccommonly called Aqua Fortis.Oxaliccommonly called Salt of Lemons.Sulphuriccommonly called Oil of Vitriol.Sulphate of Limecalled Plaster of Paris.Sulphate of Magnesiacalled Epsom Salts.Sulphate of Sodacalled Glauber Salts.Sulphate ofZinccalled White Vitriol.Nitrate of Silvercalled Lunar Caustic.Acetate of Coppercalled Verdigris.Muriate of Sodacalled Table Salt.Tartrate of Potashcalled Tartar Emetic.Carbonate of Ammoniacalled Smelling Salts.Carbonate of Limecalled Chalk, Marble, &c.Super-acetate of Leadcalled Sugar of Lead.Oxide of Leadcalled Goulard.
Sublimatesare chemical preparations, the basis of which is quicksilver. Incorrosive sublimates, the quicksilver isextinguished, either by vitriol, potter’s clay, or some other ingredient.
Sublimationis a similar process to distillation; onlysolids(such as metals) are employed, instead ofliquids.
Thus the fineblueused by painters is a sublimate, and made thus:—Take 2 parts of quicksilver, 3 flower of brimstone, 8 sal ammoniac; and (having ground them) put them with the quicksilver into a glass retort, luted at the bottom; place the retort in a sand-heat; and (when the moisture is given off) you will have a splendid blue sublimate for painting.