B. This and most of the other ranunculaceae are acrid and caustic. The caustic principle is of a singular nature; it is so volatile that in most cases it is destroyed by desiccation, infusion in water, and decoction, 25, 105.

* The Medical Bulletin, July, '79, 49,

Most of the species, when applied to the skin in a fresh state, act as vesicants; they are apt, however, to cause ulcerations difficult to heal, 28, 4. Excoriates the skin and may excite erysipelas, 51, 6: 266. The fresh root laid on the skin causes burning, followed by a vesicle, and later an ulcer, 23, 3: 358. May give rise to superficial gangrene, after having produced vesicles, 26, 904.

Ranunculus Acris, L., P.; U.S.D

B. Vesicles and ulcers, 23, 3: 361.

Ranunculus Flammula, L., P.; U.S.D

B. Reddens and vesicates the skin, 23, 3: 346.

D. Corns and warts (ib.).

Ranunculus Scelebatus, L., P.; U.S.D

B. If it be bruised and laid upon any part of the body, it will in a few hours raise a blister, 27, pt. II., 23. The juice causes vesicles and obstinate ulcers, 23, 3: 353.

D. Chronic ulcers, 31, 93.