In the earlier stages of this disease, when there is evidence of local lung-congestion, with pain and oppression, and in the later stages when acute general symptoms are not urgent, I have known it serviceable. Dr. Hogg recommended its application on plaster, sprinkling about 4 gr. of finely powdered tartar emetic upon the surface of an ordinary warm "pitch-plaster:" in the course of a few days this produced much irritation and a crop of pustules. It seems rather severe treatment, but is sometimes beneficial (British and Foreign Review, ii., 1860, p. 382).