Modulus of elasticity,6,25,89
formulæ,98,102,104,114,123
of rupture,26,54,62,75
formulæ,98,102
speed-strength,94
Moisture, determination,90,133-134
effect of,6,8,17,33,75-84,138-139
Mulberry,44,51
Natural shape and size,2
Neutral axis,23
plane,23,33
Oak,15,22,43,48,49,55,60,66,71,84
black,40
bur,13
live,22
post,9,13,16,20,27,32,40,42,56
red,9,13,16,20,27,32,40,42,56,124
southern,52,71
swamp white,9,16,20,27,32,42,56
tanbark,56
white,13,16,20,27,32,40,42,54,56,72,144
yellow,9,13,16,20,27,32,42,56
Osage orange,13,16,27,32,40,51,56
Oven-dry,57
Packing Boxes, testing,124
Permanent set,5
Permeability,54
Pitch pockets,65
Pith rays (see Rays)
Pine,44,45,55
Cuban,71
loblolly,36,48,51,54,71,85,140,141,142,143
lodgepole,13,16,20,27,32,40,42,57
longleaf,6,7,8,9,13,14,16,20,27,32,36,40,42,46,57,59,65,71,78,140,141,142,143,144
northern yellow,22
Norway (see Red pine)
red,9,13,16,20,27,32,36,40,42,48,57,140,141,142,143,144
shortleaf,13,27,36,48,57,71,140,141,142,143,144
southern yellow,22,124
sugar,9,13,16,20,27,32,42,57
western yellow,9,13,16,20,27,32,40,42,57
white,13,15,16,20,22,27,32,40,42,51,57,144
Plane, neutral,23,33
Plasticity,6
Pliability,5,38,85
Poplar,22,44
yellow,44
Pores,44
Preservatives, effect of,86
Rays,60
effect on compression failure,17,18
shrinkage,81-82
Redwood,13,16,27,36,48,57,140,141,142,143,144
Resilience,2,5,49
elastic,6
formulæ for,98,102,104,114
Resin, effect of,59
pockets,65
Rind-gall,65
Ring, annual,44
growth,44,52
-shake,64-65
-porous,44,59
Rot,68,69
Rupture, modulus of,26,54,62,75
formulæ,98,102
Safe Load,29
Sap,73,74
-stain,59
-wood,50-54,73,74
Sassafras,51
Season checks,61,78-84
of cutting, effect of,73-75
Seasoning,55,74,75-84
Second-growth,49,50
Set,5
Shake,64-66,72
cup,64
heart,64
ring,64
star,64
Shear 3,19-22,133
across the grain,19,21,22
along the grain,19,21,76,94,107-110
formulæ,98,102
horizontal,24
failure,35-37
longitudinal,21,24
oblique,21,22
transverse,23
vertical,23
Shearing strength,2,19
Shipping dry,57
Shipworms,67
Shock,30,49
Shortening,3,33
Shrinkage,54,58,74,76,78-82,135-137
S-irons,83
Site, effect on wood,48,49,70-73
Size of test specimens, effect of,89-90,138-139
Sketching test specimens,94-95,100,102,106
Softwood,44,60
Span,25
Specific gravity,55,135-137
Speed of testing machine,93-94
-strength modulus,94
Sphæeroma,67
Spike-pulling test,123
Spiral grain,60
Splintering tension failure,34
Splitting,41,60
Spring wood (see Early wood)
Spruce,14,15,22,44,59,75,84,144
Engelmann,13,16,20,27,32,40,42,57
red,7,13,27,57,140,141
white,13,27,57,140,140
Static tests, machine for,90-92
Steaming, effect of,85,87
Stiffness,1,4,5,6,25,26,62,76
Strain, definition of,2
unit,3
Stress, compressive,3
definition of,2
due to impact,31,32
external,2,33
internal,2
shearing,3,21
tensile,3,62
torsional,38
Stress, unit,3
-strain diagram,3,97-98,100
Structural timbers, strength of,138-144
Summer wood, (see Late wood)
Sycamore,9,13,16,20,27,32,42,57,64
Tamarack,9,13,16,20,27,32,36,40,42,48,57,140,141,142,143,144
Temperature, effect of,84-86
Tensile strength,1,7,23,78
parallel to grain,7,8
right angles to grain,8
Tension,7
failures,34
tests,118-122
Teredo,67
Tests, impact,31-33
timber,88-136
Test specimens, size of,89-90
Timber testing,88-136
Vehicle woods, testing,124
Variability of wood,1,2,43
Walnut, black,22
common,22
Water content,55,73,74
effect of,06,08,17,33,75-84
Wear, resistance to (see Abrasion)
Weight, relation to mechanical properties,54-55
Willow,44
black,13
Work (see Resilience),30,54
Working plan,88,127-137
Xylotrya,67
Yellow Poplar,44
Zinc Chloride, effect of,87