Water 10 oz.
Sulphate of Copper 100 grains.
Bromide of Potassium 100 "
When dissolved, this solution is ready for application and can be
used repeatedly.
The negative, after fixing and washing, is immersed in the solution
until it turns white. [p063]
Now remove it and wash slightly, then immerse it in old ferrous
oxalate developer and allow it to remain until it becomes black
entirely through the film. This method gives fine results and good
printing color.