386 PHOTOGRAPHIC FACTS AND FORMULAS 
Sulphide - Developer Toning, 
241 
Sulphide-Ferricyanide Toning, 
236 
Sulphide-Schlippe’s Salt Ton- 
ing, 244. 
Sulphide Toning, 234. 
Sulphocyanide Toning Bath, 
T77: 
Sulphur Toning, 247. 
Support, Flexible Temporary, 
251 
Symbols, Molecular Weights, 
368. 
Table, Enlarging & Reducing, 
334 
Tank Developers, 88. 
Telephoto Formulas, 47. 
Temperature Co-Efficient, 78. 
Temporary Support, 251. 
Thermo Development, 77. 
cee Development Speeds, 
Thermometer Scales, 366. 
Thiocarbamide-Sulphide Ton- 
ing, 238. 
Thiomolybdate Toning, 240. 
Thiostannate Toning, 240. 
Three-Colour Filters, 344. 
Timing Shutter Speeds, 51. 
Toning Blue Prints, 260. 
Toning Bromide & Gaslight 
Prints, 216. 
Toning by Redevelopment, 232. 
Toning Platinotypes, 288. 
Toning (PO. Pease: 
Toning Bath, Alkaline, 176. 
ee Bath, Sulphocyanide, 
Toning & Fixing Bath, Com- 
bined, 178. 
Tezol, 122: 
Transfer Paper, Single, 251. 
Transfers, Bromoil, 306. 
Transfer with Collodion, 252. 
Transparencies, Blue, 261. 
Transparencies, Carbon, 253. 
Transparencies, Cyanotype, 261. 
True-to-Scale Process, 265. 
Undersrnend Magnesium Work, 
342. 
Uranium & Iron Toning, 227. 
Uranium Toning, 219. 
Uranium Toning P. O. PB.) 962: 
Uranium Intensifier, 137. 
Using Flashlights, 339. 
Vanadium Toning, 222. 
Vandyke Process, 358. 
Variation of F Values, 71. 
Variation of Enlarging Expo- 
sures, 72. 
Varnishes, 150. 
Varnish, Black, 154. 
Varnish, Celluloid, 155. 
Varnish, Crystal, 156. 
Varnish, Cold, 150, 154. 
Varnish, Hot, 150. 
Varnish, Matt, 153. 
Varnish, Print, 154. 
Varnish, Retouching, 156. 
Varnish, Zapon, 155. 
Varnishing Autochromes, 348. 
ee Photogravure Plate, 
357. 
Varnishing Platinotypes, 292. 
View Angles, 45. 
Watkins Plate Speeds, 55. 
Watkins-Powers Numbers, 49. 
Wave - Lengths Fraunhofer 
Lines, 22. 
Waxing Solution, 252. 
Weights & Measures, 1, 360. 
Weights & Measures Conver- 
sion, 360. 
bie ey & Measures Tables, 
361. 
Willis’s Process, 318. 
W. P. Numbers, 49. 
Wood, Blackening, 4, 
Wood Final Support, 253. 
Wood Sensitising, 196. 
hadcirs Panchro Developers, 
8. 
Wynne Plate Speeds, 55. 
Zapon Varnish, 155. 
Zinc & Copper, Cleaning, 351. 
Zinc, Etching Baths, 353. 
