of attributes which specifically belong to the earth and water. Earth and water are heavy, and naturally gravitate downward owing to their heaviness. Hence it is inferred that purgative drugs are largely endued with the specific attributes of earth and water, in virtue of which they are more strongly attracted towards the centre of the earth (gravity). Drugs endued with emetic properties are possessed of attributes which form the characteristics of fire and air. Fire and air are light, and naturally ascend upward owing to their lightness. Hence it is inferred, that emetic (Vamana) drugs are largely possessed of attributes, which are upcoursing in their nature. Drugs or substances endued with both emetic and purgative virtues are characterised by attributes belonging to both the aforesaid elements (earth and fire).
Drugs, which soothe the deranged bodily humours, are permeated with, qualities which specifically belong to the principle of the sky. Astringent (Sangrahaka) drugs are endued with attributes, which specifically belong to the air owing to the drying character of the latter element. Appetising (Dipana) drugs are largely possessed of attributes which belong to the material principle of fire. Lekhana (Liquefacient) drugs or substances are endued with attributes which belong to fire and air. Constructive or restorative (Vringhanam) drugs or substances are endued with attributes which speci-
