Class I. - Laxatives.

Prune, Fig, Tamarind, Cassia Fistula, Manna, Phytolacca, Eupatorium, Castor Oil (small doses).

Class II. - Simple purgatives

Castor Oil, Rhubarb, Juglans, Senna, Frangula, Rhamnus Pur-shiana, Aloes.

Class III. - Drastic purgatives.

Scammony, Jalap, Bryonia, Croton Oil, Colocynth, Elaterium, Gamboge.

Class IV. - Cholagogues.

Podophyllum, Leptandra, Chelidonium, Iris, Euonymus.