Pine, spruce, 26 Pine, sugar, 24 Pine, swamp, 26 Pine, torch, 26 Pine, Weymouth, 23 Pine, western, 25 Pine, western white, 25 Pine, western yellow, 25 Pine, white, 23, 24 Pine, yellow, 24, 25, 26 Pin oak, 73 Pipe or moist-air kiln, 188 Pitch pine, 26 Pith and bark, 8 Plane tree, 80 Pocket dry kiln, the, 200 Point in wood, the fibre saturation, 118 Pole pine, lodge, 27 Poplar, 67, 77, 79, 81 Poplar, bay, 60 Poplar, blue, 81 Poplar, Carolina, 77 Poplar, downy, 78 Poplar, hickory, 81 Poplar, Lombardy, 79 Poplar, swamp, 60 Poplar, white, 79, 81 Poplar, yellow, 81 Port Orford cedar, 18 Possum oak, 73 Post borers, powder, 105 Post oak, 74 Post oak, swamp, 73 Pounds of water lost in drying 100 lb. green wood in the kiln, 179 Powder post borers, 105 Preliminary steaming of gum, 182 Preliminary treatments, 151 Pressure and vacuum, drying under, 146 Pressure, drying at atmospheric, 146 Prevent injury from insects, how to, 107 Prevention of checking and splitting, 129 Principles of kiln-drying, underlying, 166 Problems in kiln-drying, unsolved, 143 Products, crude, 106 Products in the rough, seasoned, 112 Products in the rough, unseasoned, 109 Progressive dry kiln, the, 196 Properties, characteristics and, 1 Properties of wood, 4 Properties of wood that affect drying, 141 Properties that influence drying, physical, 125 Puget Sound pine, 29 Pumpkin pine, 23, 24 Punk oak, 73 Pussy willow, 84 Quaking Aspen, 79 Range of Red Gum, 55 Range of tupelo gum, 61 Rapidity of evaporation, 124 Recording hygrometer, the, 242 Recording steam gauge, the, 246 Recording thermometer, the, 245 Records of the moisture content, keep, 249 Red ash, 38 Red beech, 40 Red birch, 43 Red cedar, 18, 19 Red cedar of the West, 17 Red cherry, 47 Red cherry, wild, 47 Red cypress, 19 Red elm, 51 Red fir, 21, 29 Red gum, 54, 79 Red gum, demands upon soil and moisture of, 56 Red gum, form of the, 55 Red gum, kiln-drying of green, 183 Red gum, range of, 55 Red gum, reproduction of, 57 Red gum, second-growth, 59 Red gum, tolerance of, 56 Red juniper, 18 Red maple, 69 Red mulberry, 70 Red oak, 74, 75 Red pine, 29 Red pine, American, 25 Red spruce, 28 Redwood, 19, 27 Redwood, California, 19 Redwood, Coast, 19 Registering hygrometer, the, 244 Registering thermometer, the, 246 Rendering drying difficult, changes, 140 Reproduction of red gum, 57 Requirements in a satisfactory dry kiln, 160 Ring, the annual or yearly, 10 River birch, 43 Rock chestnut oak, 73 Rock elm, 50 Rock maple, 68 Rock oak, 73 Rosemary pine, 25 Rough, seasoned products in the, 112 Rough, unseasoned products in the, 109 Round-headed borers, 101 Round timber with bark on, 106 Rum cherry, 47 Samples for Scalometer Test, 248 Sand bar willow, 84 Sap and heartwood, 8 Sap, composition of, 116 Saplings, 108 Sap pine, 25 Sassafras, 80 Satin walnut, 54 Satisfactory dry kiln, requirements in a, 160