purpurine

The retina of the eye is itself demonstrably a photographic plate having a substance called purpurine secreted by appropriate glands spread over it in place of the silver salts of common photography.

Scientific American, Volume XLIII., No. 25, December 18, 1880 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. Various

_ -- Make the dye-bath with 24 lb. Brilliant purpurine R and 25 lb.

The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech

These are: alizarine itself, which produces a bluish shade of red; anthra-purpurine, which gives a similar but less blue red than alizarine; and flavo-purpurine, which produces the yellowest reds.

The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech

_ -- Prepare a dye-bath with 5 lb. soda, 10 lb. Glauber's salt, 12 oz. Chrysamine, 1 oz. Benzo purpurine, 6-1/4 oz. Benzo azurine.

The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech

For dyeing Turkey reds the flavo-and anthra-purpurine brands or yellow alizarines are to be preferred; for pinks and rose shades the alizarine or blue shade brands are best.

The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech

_ -- Prepare a dye-bath with 3/4 oz. Diamine black R O, 2-1/2 lb. Benzo purpurine 6 B, 10 lb. Glauber's salt.

The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech

_ -- Prepare a dye-bath with 1-1/2 lb. Benzo purpurine 4 B, 1 lb.

The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech

Nothing in the history of cotton dyeing caused such a revolution in the methods of working as did the introduction some fifteen years ago of the forerunners (Congo red, Benzo purpurine, Chrysamine, Azo blue) of the now numerous group of direct dyes, followed as they were by the Benzo,

The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech

_ -- Prepare a dye-bath with 1 lb. Cachou de laval, 1/4 oz. Benzo purpurine B.

The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech

_ -- Dye with 3 lb. Benzo purpurine 4 B, 3 lb. soda and 15 lb. Glauber's salt.

The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech