Water (about 125F)	500cc
Elon (Metol)	3.1 grams
Sodium Sulfite	45 grams
Hydroquinone	12.2 grams
Sodium Carbonate	67.5 grams
Potassium Bromide	1.9 grams
Cold water to make	1 liter

For use: Dilute 1 to 1 for Velox, 1 to 2 for Azo and 1 to 4 for bromide papers.

Develop Velox and Azo 45 seconds at 70F (21C).

For colder tones on Azo, dilute as for Velox

Develop bromide papers 1-1/2 minutes at 70F (21C).

From "Elementary Photographic Chemistry," Eastman Kodak 1929