The book mentions in detail, the complete pathogenesis of 131 drugs proved & reproved by the author himself, with special emphasis on the stock, description, preparation, proving record, differentials & modalities. Systematic in it’s representation of relevant data, a must have in every homoeopathic library.

Long-lived plant, its leaves are of blue-green colour, with the persistence ofsea-grccn colour, 8 to 30 cm large and 125 cm long. Itendsinapointed thorn of coffee-brown colour 3 to 4 cm large and 15 to 20 mm long. The leaves are thick, fleshy, with triangular thorns on the sides. The infloresccnce may reach up to 10 to 20 m in height and 30 to 40 cm in width.

The plant is used to prepare a drink which is popular and is called the "pulque", obtained by the fermentation of the,.plant and a liqueur, the "tequila", obtained by distillation.

There exist about 170 varieties of Agave, most of which are of North American and Central American origin.

Chemistry : Found saccharose in the leaves, some mucilage, some ascorbic acid.

The most important is the presence of SAPONOSIDES STEROIDIC. "Hecogenine" which serves as industrial base lor the preparation of steroidic products.

HOMOEOPATHIC EXPERIMENT The Hahnemannian provings were conducted by Dr. Legarreta with 3 DH 15 drops, three times daily. He has used in a first proving the mother tincture prepared from the plant itself, and in his second experiment with the liqueur tequila.