For adding to the gallic acid during development, is composed of
| Fused Nitrate of Silver | 30 | grains. |
| Distilled Water | 1 | ounce. |
THE FIXING SOLUTION
Consists of a solution of hyposulphite of soda in water, (filtered,) in the following proportion:—
| Hyposulphite of Soda in crystals | 8 | ounces. |
| Rain or Filtered Water | 1 | pint. |
The Apparatus, &c. required in the Dry Collodion process is of the most simple kind, and consist of the following items
Glass plates.
Pneumatic plate holders.
Plate holder, for cleaning the plates.
Glass or porcelain dishes.
Glass or gutta percha dipping bath and dipper.
Silver hook, for lifting plates.
Levelling stand.
Measures, 1, 2, and 4 ounce.
Glass funnels.
Wash leather.
Some clean cloths and broad camel's hair brush.
Cotton wool.
Bibulous paper.
[A] The Chemicals are—
Nitrate of silver (fused.)
Glacial acetic acid.
Iodized Collodion (dry.)
Gelatine.
Citric Acid.
Alcohol.
Sulphuric æther.
Gallic acid.
Hyposulphite of soda.
Iodide of cadmium.
Benzoin varnish.
[A] The dry Collodion and the various solutions, ready for use, may be obtained of the Publishers.
In the above List we presume that the operator is in possession of a suitable camera and lens, and the usual adjuncts of camera tripod, &c. &c. These should all be of the best kind, otherwise it will be impossible to obtain good results.