| Bichromate of Potash | 1 | ounce. |
| Water | 25 | ounces. |
Paper for either gelatine or arrowroot transfers, after keeping so long after preparation as to be useless, should not be thrown away, but should be again floated upon bichromated gelatine or arrowroot, and after drying will give finer results than new paper.
Prof. Husnik’s photo lithographic transfer paper is obtainable in England and in America. He recommends the following chromate bath:
| Bichromate of Ammonium | 1 | ounce. |
| Water | 15 | ounces. |
| Alcohol | 4 | ounces. |
| Liquor Ammonia | 1 | ounce. |
Keep well corked in a dark place.
CHAPTER III. PAPER TRANSFERS—(Continued).
Prepare a solution of
| Gelatine | 5 | ounces. |
| Sugar | 1 | ounce. |
| Water | 20 | ounces. |
Soak the gelatine in the water (cold) until quite soft, then melt it by the application of heat (nothing is better for this sort of work than a Bain Marie, a domestic utensil with a porcelain pan enclosed in one of tin); then add the sugar and stir well, continuing the application of heat until a temperature of 150° F. has been reached; now strain the gelatine through muslin, into a clean dish placed in a larger dish containing boiling water, the heat from which will keep the solution of gelatine in a properly liquid state during the operation of coating the paper.
The best for these transfers is a good hand-made writing paper, or good bank-post.