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CHAPTER XXI.

Now we shall discuss the Chapter which investigates the nature of bodily humours, as exciting causes of ulcers (Vrana-prashna-madhyayam).

The Vayu, Pittam and Shleshma should be considered as the primary and the most essential factors in the constitution of human organism. These fundamental and vital humours, occupying respectively the lower, middle, and upper parts of the body, maintain its integrity. The human body is supported by the three fundamental humours in the same way as a dwelling house is propped up by three supporting poles or stays; from which fact, the body is called the three-supported one (Tristhunam) by certain authorities. A deranged condition of these three fundamental humours may bring about its dissolution or death, while on their continuance in a normal state depends the vitality of the organism. These three humours, in combination with a fourth, the principle of blood, determine the origin, preservation, and dissolution of animated organism and permeate it with their respective properties till the moment of death.

Authoritative verse on the subject:—There can be no organism without Vayu, Pittam, Kapham and blood, which are necessary to