380 PHOTOGRAPHIC FACTS AND FORMULAS 
Development Papers, Velox, 
208. 
Development Papers, Velvet 
Green, 210 
Development Papers, Vitava, 
205. 
Development Papers, Vittex, 
213 
Development, Stand, 80. 
. ee eee Toning, 
45. 
Development, Thermo, 77. 
Dextrine Mountant, 325. 
Dextrine-Gum Mountant, 325. 
Diagonals of Plates, 46. 
Diagram Lantern Slides, 330. 
Diamond Cement, 9. 
Diaphragm Apertures, 44. 
Diaphragm Systems, 74. 
Diazotype Process, 320. 
Dichroic or Green Fog, 129. 
Diogen, 94. 
Direct Negatives, 15. 
Direct Prints on Zinc, 358. 
Direct Sulphide Toning, 234. 
Distribution of Spectrum Col- 
ours, 23 
Dry Mounting, 327. 
Duodecimal & Metric Systems, 
364. 
Duration of Flash, 343. 
Dusting-On, Pepper, 316. 
Dye Intensification, 140. 
Dyeing Fish-Glue Prints, 353. 
Eastman Film Developers, 100, 
103) 119. 
Eastman Plates, 376. 
Eder’s Reducer, 144. 
Edinol, 94. 
Effect of Stop Aperture, 71. 
Eikonogen, 95. 
Elconal, 109. 
Eliminators, Hypo, 126. 
Elon, 95. 
oa C. C. Printing-out, 
Emulsion, Printing-out, 173. 
Enamel for Zinc, 352. 
Endemann’s Process, 320. 
Enlarging, Exposures-in, 335. 
Enlarging Exposures Variation, 
Enlarging & Reducing Table, 
334 
Etching Bath, Zinc, 353. 
Etching, Machine, 354. 
Pe Photogravure Plate, 
357; . 
Exposure, 51, 60. 
oe Effect of Altitude, 
2 
Exposure in Enlarging, 335. 
Exposure Meters, 75 
Exposure Meter Paper, 75. 
Exposures for Interiors, 73. 
Exposures, Pinholes, 48. 
Exposures in Reducing, 335. 
Exposure ‘Tables, American 
Photography, 51. 
F Values, Variation of, 71. 
Fabrics, Fireproofing, 5 
Fabrics, Sensitising, 195. 
Factorial Development, 76. 
Factorial Development of Bro- 
mide Papers, 202. 
Factors, Development, 76. 
Farmer’s Reducer, 145. 
Feertype Process, 320. 
Ferric Oxalate Making, 274. 
Ferric Reducers, 145. 
Ferrogallic Process, 263. 
Ferroprussiate Process, 258. 
Ferrous Oxalate, 95. 
Film Developers, 100. 
Films, Stripping, 157. 
Filters, Additive, 344. 
Filters, Orthochromatic, 29. 
Filters, Three-Colour, 344. 
Final Support, 253. 
Fireproofing Fabrics, 5. 
Fish-Glue Prints, Dyeing, 353. 
Fish-Glue Sensitiser, 351. 
Fixative for Prints, 157. 
Mixing, 123: 
Fixing, Plain Bath, 123. 
Fixing, Alkaline Bath, 123. 
