Page:Paper and Its Uses.djvu/176

160 Society of Arts and deterioration of paper, 63 Soda pulp, 3 Sorting paper, 29 — rags, 8 Southworth paper-testing machine, 100 Spiral laid dandy roll, 23 Squareness, testing for, 97 Starch, testing for, 103 Stationers' ream, 34 Stock accounts, 93 — papers for letterpress printers, 91 — — lithographers, 93 Stock room, position and condition of, 89 Stocktaking, 94 Straw, 3, 5, 109 — fibres, 5, 109 — microscopical examination of, 109 — testing for, 107 Stretch in litho. paper, 46, 71 Stretching of paper, 71 Suction boxes, 23 Sulphate pulp, 4 Sulphite pulp, 4 Surface-coloured enamel papers, 49 Surface of papers, testing, 101 Super-calendered (S.C.) papers, 30 Super-calendering, 25 "Swift" paper curing machine, 70

of equivalent weights, 144-45 — of prices of boards, 141 — of sizes and thicknesses of millboards, 143 — — of cards, 140 — — of index cards, 140 — of note and letter papers, 135 — of sizes, weights, and prices of browns and wrappings, 142 — printings, 136 — writings, 138 Tearing as a method of comparing strength, 88 Tensile strength, 97 Testing absorbent paper, 104 — art paper, 73 — bursting strain, 100 — coloured papers for pasting, 104 — copying paper, 105 — duplicating paper, 105 — elasticity, 97 — fastness of colours, 103 — for bamboo in paper, 107, 110 — — chemical wood, 110 — — cotton in paper, 108 — — esparto in paper, 107, 110 — — hemp in paper, 109 — — jute in paper, 109 — — linen in paper, 109 — — loading, 105 — — manilla in paper, 109 — — mechanical wood, 106, iio — — mineral matter, 105 — — starch, 103 — — straw in paper, 107, 109 — — various faults, 111 — opacity, 100 — printing qualities, 111 — resistance to wear, 101 — sizing of papers, 102 — squareness, 97 — surface, 101 — thickness of papers, 97 Testing paper, 96 Thickness of sheets, 97 Tinted printings, 45 Tissue papers, 53 Toned printings, 45 Torn paper, 111 Transporting paper, 89 Treatment of esparto, 11 — of rags, 9 Triplex boards, 59 — manufacture of, 35 Tub-sizing, 28 — testing for, 102 — writing papers, 30 Typewriting papers, 40

weights and sizes of browns and wrappings, 142 — — printings, 136 — — writings, 138

paper, 83 Varnished work, paper for, 82

rags, 9, 10 Water finish, 30 Waterleaf, 17 Watermarked paper, cutting, 79 Watermarks, 15, 25 Wavy edges, 72 Wearing qualities of paper, 64 Weight of paper, to calculate, 146