INDEX Abestine, 125 Abietic acid, 116 Adka save-all, 352-354 Agalite, 125 Agitators, 137-138 Air-drying, 297 et seq. Air permeability, 334-336 Alfa, sec Esparto Alpha-cellulose, 64 Alum, 122-124, 260, 261, 292 Aluminium sulphate, 122- 124 Aniline colours, 133-135 Anti-chlors, 32-33 Apron, 160-163 Baby presses, 250 Back knotters, 153, 158-159 Backwater, 260^352 system, 142, 143 Bagging, 19 Bank-note papers, n, 234 Barium sulphate, 125 Barometric leg, 185 Barytes, 125 Basalt Lava beater roll, 77 Basic dyes, 262 Beaters, 75 et seq., 264 Beating, 74 et seq., 282 free, 87-88, 89, 93 wet, 87, 89 et seq. Bed plate, 27 Bekk hardness tester, 335 Best fines, 15 Bewoid size, 117 et seq. Bird screen, 156-157 Bisulphite liquor, 57 Black ash, 358 Blanc fixe, 125 Bleached kraft, 66 soda pulp, 67 Bleaching, 31-33, 38 etseq. of rags, 31-33 of wood pulp, 48-49 liquor, 31, 373 methods, 45-47 Bleaching, multi-stage, 60 powder, 40, 373 towers, 46-47 Blistering, 246 Blotting-paper, 6 Blow rolls, 194 Board machines, 246, 247 ct seq. Boilers, rotary, 24, 37 stationary, 37-38, 39 Boiling, 355 of rags, 24-27 Box strainer, 157-158 Breakers, groundwood, 264 pulp, 263 rag, 27-31, 282 Breast board, 160 boxes, 160-163, 270 Broke, 106-115, 318 Brush damper, 302 Bulk of paper, 333-334 Bursting strength, 330 •Button catcher, 27 Calcium carbonate, 257 sulphate, 125 Calender rolls, 215-216 Carbon black, 132 Carmine, 133 Caustic soda, 24, 355 specific gravity of solu- tions of, 376 Causticiser, 360 Cellulose, I alpha-, 64 hemi-, 60 oxy-,711 Centrifiner, 150 Centrifugal machines, 147 et seq. Chemical wood pulp, 50, 56 et seq. semi-, 61-62 China clay, 124, 257, 260 Chlorination, 60 Chlorine, 43-45 377 Colophony, 116 Composition, 336-337 Concentrator, drum, 49 Conditioning of paper, 324- 325 Conical washer, 27 Consistency regulator, 266 Constant humidity, 327-328 Cotton, 2 etseq., 12, 13 beating of, 97-101 canvas, 18-19 linters, 2 Couch jackets, 187 et seq. rolls, 187 et scq., 363 suction, 192-193 Cover washing, 30 Crown filler, 125 Crushing, 169 Curtain cuttings, 13 Cutting, 309 et seq. to register, 311 Cylinder moulds, 246, 247 Damping, 302 etseq. Dandy rolls, 228-229, 273 care of, 232 Deckle straps, 176, 182-183 Dendritic growths, 339 De Vains, process of, 73 Digesters, 56-57 Dirtec, 152 Doctor, 214-215 Drum washers, 27,30, 282 Dry felts, 202, 210-214 Dryers, 275-278 Drying cylinders, 202-204 lofts, 286 Dual press, 196, 274 Duplex cutters, 310, 313 papers, 246, 248, 250 Durability of papery 3 8-341 Dust, 33-36 Duster, rag, 21, 23 Dyeing, 128 et seq. Dyes, 262