Among blood diseases we may include this form of blood-poisoning, and although it is difficult to credit arsenic with efficacy in such cases, we must admit not only a long tradition in its favor in India (v. Dr. Russell's "History of Indian Serpents"), but some amount of clinical evidence. A compound of white arsenic with black pepper and native herbs is the popular form, known as "Tanjore pill," but Mr. Ireland used 2-dr. doses of the liquor arsenicalis with 10 min. of tinct. opii every half-hour for four successive hours in five cases, and all of them recovered, although other patients died from similar bites (Medico-Chirurgical Transactions, ii., p. 393). No doubt, the system, under abnormal influences, can tolerate larger doses than in its healthy state.