300 PHOTOGRAPHIC FACTS AND FORMULAS 
B. Glacial acetic acid 50 ccm 1 oz: 
Hydrochloric acid, pure 50 ccm 1 oz. 
Formaldehyde 1100 ccm 22 oz. 
The working solutions are: 
First bath. <A solution 1 part 
Water 3 parts 
Second bath. B solution 1 part 
Water 32 parts 
The first bath may be repeatedly used, but the second should 
be made fresh every time. The temperature is important, 
and 18° C. (65° F.) is convenient. The bromide print must 
be thoroughly and evenly soaked in water. The tissue should 
be immersed in the first bath for 3 minutes, and transferred 
to the second bath. The length of stay in this determines 
the character of the resultant print. If the final print is to be 
like the bromide, 20 seconds would be correct; a shorter 
time gives increased contrasts, a longer time softer prints. 
The actual time varies with different makes of bromide paper, 
but the above rules apply to all. The soaked tissue is removed 
from the second bath, squeegeed into contact with the wet 
bromide print, and the two left in contact for about 15 min- 
utes. A longer time gives a darker print. The tissue, after 
the lapse of the necessary time, is stripped from the bromide 
print, and the latter put into a dish of water to wash. The 
tissue should be brought into contact with a well-soaked sheet 
of transfer paper, thoroughly squeegeed, allowed to remain 
30 minutes, and then developed as in the carbon process. A 
lower temperature of the developing water should be started 
with; hotter may be used as development proceeds, if neces- 
sary. Almost any kind of bromide paper may be used; but 
development (gaslight) papers are less satisfactory. After 
the bromide print has been well washed, it can be developed 
in white light with any developer. It is advisable for the 
