Orchitinum. Testicular Extract. Spermin. A Sarcode. Trituration.   Clinical.-Climacteric, sufferings of. Debility. Sexual weakness. Senility.   Characteristics.-The use of a testicular extract in cases of senile decay and nervous breakdown

Opuntia. 1. OPUNTIA VULGARIS. CACTUS OPUNTIA. (Prickly Pear.)   2. OPUNTIA ALBA SPINA. (Prickly Pear.) N. O. Cactaceae. Tincture of flowers of O. vulg. Tincture of stems of O. s.

Opium. Papaver somniferum. Poppy. N. O. Papaveraceae. (Opium is the gummy exudation of the unripe capsule of the poppy.) Tincture.   Clinical.-After-pains. Apoplexy. Bladder, paralysis of. Brain, affections of. Cancer.

Oophorinum. Ovarian Extract. A Sarcode. Trituration of expressed juice of ovary of sheep or cow.   Clinical.-Acne rosacea. Climacteric, sufferings of. Flushings. Nervousness, climacteric. Ovaries, tumours of; disease of. Prurigo.

Onosmodium. Onosmodium virginianum. False Gromwell (or Gromell). N. O. Boraginaceae. Tincture of entire fresh plant, including root.   Clinical.-Amblyopia. Bladder, irritation of. Breasts, affections of; atrophy of. Colour-blindness. Debility. Diarrhoea.

Ononis. Ononis arvensis. Rest-harrow. Cammock, N. O. Leguminosae. Tincture of fresh plant.   Clinical.-Epilepsy. Epistaxis. Headache.   Characteristics.-Ononis arv. is indigenous to Britain, growing on barren pastures and on the

Oniscus. Oniscus asellus. O. armadillo. Armadillo officinalis. Sow-bug. Sow-louse. Cellar-worm. N. O. Isopoda (Class Crustacea of the Articulatae). Tincture of living animals.   Clinical.-Colic. (Epilepsy.) Haemoptysis. Strangury. Toothache.   Characteristics.-In