process clear to you, and hope to enlist your attention.

The developer I use is slightly different to that of the Eastman
company, and is as follows:

A.
Sulphite of soda. 4 ounces.

To be dissolved in 8 ounces of hot distilled water, then rendered
slightly acid with citric acid, then add--

Pyrogallic acid. 1 ounce.
Water to make up to 10 ounces.

B.
Pure carbonate of soda. 1 ounce.
Water to make up in all to 10 ounces.

C.
Pure carbonate of potash. 1 ounce.
Water to make up to 10 ounces.

D.
Bromide of potassium. 1 ounce.
Water to make up to 10 ounces.

I have here two half-plate films exposed at 8:30 A.M. to-day, one with
five and one with six seconds' exposure, subject chiefly middle
distance. I take 90 minims A, 10 minims D, and 90 minims B, and make
up to 2 ounces water. I do not soak the films in water. There is no