I want to buy some pyrogallic acid.
"The Whirlpool" by George Gissing
Pyrogallic acid will change your skin to that of an Indian.
"The Extraordinary Adventures of Arsene Lupin, Gentleman-Burglar" by Maurice Leblanc
Pure water, 24 ounces; oxalic acid, 15 grains; pyrogallic acid, 1 ounce.
"Practical Mechanics for Boys" by J. S. Zerbe
Pyrogallic acid 2 grains.
"Notes and Queries, Number 214, December 3, 1853" by Various
Place a tablet of pyrogallic acid in one division of the interior of the plate base, and two tablets of sodic hydroxide in the other.
"The Elements of Bacteriological Technique" by John William Henry Eyre
Pyrogallic acid 1-1/2 to 2 grs.
"Notes and Queries, Number 192, July 2, 1853" by Various
When pyrogallic acid was first employed in photography, it was quoted at 21s.
"The Evolution of Photography" by John Werge
The plate is then exposed and the latent image developed by an aqueous solution of pyrogallic acid, or protosulphate of iron.
"The Progress of Invention in the Nineteenth Century." by Edward W. Byrn