This section is from the book "A Treatise On The Materia Medica And Therapeutics Of The Skin", by Henry G. Piffard. Also available from Amazon: A Treatise On The Materia Medica And Therapeutics Of The Skin.
B. Vesicles, pustules, "plaques muqueuses" and ulcerations on the parts exposed to the action of the coloring matter (in makers of paper colored with Schweinfurt green), Pietra Santa (174, Sept. '58), 126, '60, 961. Ugly-looking ulcers on the hands, face, neck, and other parts of the body to which the poison finds access (in makers of artificial flowers), Hassal, 137, 2/60, 535.
 
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