The Dictionary Of Photography

A True Historic Record Of The Art & Practice Of Photography 100 Years Ago.

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Amidol
Solution B.
Water ...............    20 ozs.
Soda crystals ... ... ... ...      2 ,,
Solution C.
Water ...............    20 ozs.
Sodium sulphite, cryst, pure ......      4 ,,
Results similar to pyro may be obtained with
Solution A...............       10 parts.
B............            6 - 10 ..
Water ...............      70 ,,
Bromide (1 : 10) ............        3 ,,
But this formula may be considerably modified, according to requirements; it is not, however, advisable to increase the quantity of alkali, for fear of inducing fog. For over-exposed plates, add the solution B in the above formula little by little, until the desired effect is obtained, never exceeding the amount above prescribed. Images of a softer character are obtained as follows:
This solution remains colourless for a long time in full and air-tight vessels. When opened it changes from yellow to red, which, however, does not affect the developing power, or colora-tion of plates.
For use take -
Solution D ... ......... ... 5 parts.
Water............          50 - 70 ..
Solution C............          20 - 30 ,,
Bromide (1 : 10) ............ i£ ,,
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