Hall. The salt springs of Hall in Upper Austria, containing chlorides, iodides, bromides, and carbonates of the alkalies and alkaline earths and iron; but by far the largest ingredient is

Haematoxylon. Haematoxylon campechianum. Logwood. (Central America.) N. O. Leguminosae Caesalpiniae. Tincture of the heart-wood.   Clinical.-Angina pectoris. Colic. Diarrhoea. Dysmenorrhoea. Headache. Indigestion. Ptosis. Throat, sore.   Characteristics.-Logwood is the well-known

Gymnocladus Canadensis. Chicot. American Coffee-tree. N. O. Leguminosae. Tincture of fresh pulp of the pods.   Clinical.-Erysipelas. Fever. Headache. Spleen, pain in. Throat, sore. Tongue, blue. Toothache. Whitlow.   Characteristics.-The

Gymnema Sylvestre. Gymnema sylvestre. N. O. Asclepiadaceae. Tincture of leaves.   Clinical.-Snake-bite. Taste, altered.   Characteristics.-This plant, which grows in the Deccan peninsula, Assam, and some parts of Africa, is

Gunpowder. Black Gunpowder. Carbon-Sulphur-Kali-Nitricum.   Clinical.-Abscesses. Acne. Bites. Blood-poisoning. Boils. Carbuncles. Cuts, poisoned. Ivy (Hedera) poisoning. Osteo-myelitis. Tonsillitis, septic. Vaccinosis. Worms.   Characteristics.-Black Gunpowder is a mixture and not a

Guarea. Guarea trichilioides. Red-wood. Ball-wood. N. O. Meliaceae. Tincture and trituration of bark.   Clinical.-Apoplexy. Asthma millari. Bones, affections of. Chemosis. Dysphagia. Eyes, affections of. Hernia. Intermittent fever. Liver-spots. Lupus.

Guarana. Paullinia sorbilis. Brazilian Cocoa. N. O. Sapindaceae. Alcoholic solution of dried paste made from seeds.   Clinical.-Alcohol, effects of. Coffee, effects of. Diarrhoea. Eyelids, twitching of. Headache.   Characteristics.-Guarana