214 PHOTOGRAPHIC FACTS AND FORMULAS 
Potassium bromide 0.5¢g 8 gr. 
Water 600 ccm 20 oz. 
Dissolve in order indicated. Development, 40 to 60 seconds 
ab Gs) ao GO) B.)'. 
For soft prints: 
B. Metol Nive 25 of. 
Sodium sulphite, cryst. 28 g 3/4 OZ. 
Hydrochinon 0.5 ¢ 8 gr. 
Potassium carbonate, cryst. aoe 1 oz. 
Potassium bromide 0.5 g 8 ger. 
Water — 600 ccm 20 oz. 
Time and temperature as before. Prints of any desired 
vigour can be obtained by mixing A and B in appropriate 
proportions. After development, rinse and fix in: 
Hypo 250 g 5 oz. 
Water 1000 ccm 20 oz. 
Potassium metabisulphite 25g Y oz. 
Fix for 10 minutes, wash one to two hours. Dry flat, but not 
between blotters. This paper gives warm black tones by 
simple development, and is not intended for sepia toning in 
sulphide solutions. 
GEvAERT Nova-cas (commercial gas-light paper ).— 
Metol lg 15 gr. 
Hydrochinon 4¢ 60 gr. 
Sodium sulphite, cryst. 35 g 1 oz. 
Sodium carbonate, cryst. 70g 2 oz. 
Potassium bromide, 10% sol. 30 to 60 drops 
Water 600 ccm 20 oz. 
Dissolve in order named. Develop at 18° C. (65° F.). If 
whites are not clean, add 15 drops 10 per cent solution of 
potassium bromide to each ounce (30 ccm) developer. After 
development, rinse thoroughly and fix in: 
Hypo 150 ¢ 3 oz. 
