For restraining over-exposure use the above quantity of developer, one-half to one dram of
| Bromide potassium | 1 oz. |
| Water | 6 |
"It is always advisable to use two developing trays, p176 and have the normal developer in one and the restrained developer in the other. Then, by changing the plate from one tray to the other, the character of the negative is under full control. Four to six plates can be developed in one lot of developer.
"This developer can be used for a number of plates, and gives fine negatives of good printing quality.
"After development, return your old developer to a stoppered bottle, and keep for commencing development.
"The reason for doing this is as follows:
"As a rule, I give a little more time than necessary to make a full-timed negative, and, by commencing with the old developer, give the high lights a start of the shadows, which I can readily soften afterwards by the use of a stronger developer at the finish, thus obtaining the sparkling high lights so much admired in the wet plate; and so seldom found in the average Dry Plate Pictures.
"This developer never becomes muddy, and may be used repeatedly with fine effect.
"Always place plates in a strong solution of alum after developing and rinsing, and before fixing. This gives brilliancy to the negative and prevents the possibility of softening.
"In the use of the above formula it is important that the best Chemicals be employed."