Professor Weber and others have adduced evidence indicating that although belief in the transformation of men into beasts was not developed in the Vedic age of India, the matrix of it was there. But of our main fact--the association of demonic characters with certain tribes--India has presented many examples. In the mountains of Travancore there are tribes which are still generally believed to be on terms of especial familiarity with the devils of that region; and the dwellers on the plains relate that on these mountains gigantic demons, sixteen or seventeen feet high, may sometimes be seen hurling firebrands at each other. Professor Monier Williams contributes an interesting note concerning this general phase of South-Indian demonology. 'Furthermore, it must not be forgotten that although a belief in devils and homage to bhutas, or spirits, of all kinds is common all over India, yet what is called devil-worship is far more systematically practised in the South of India and Ceylon than in the North. And the reason may be that as the invading Aryans advanced towards Southern India, they found portions of it peopled by wild aboriginal savages, whose behaviour and aspect appeared to them to resemble that of devils. The Aryan mind, therefore, naturally pictured to itself the regions of the South as the chief resort and stronghold of the demon race, and the dread of demonical agency became more deeply rooted in Southern India than in the North. Curiously enough, too, it is commonly believed in Southern India that every wicked man contributes by his death to swell the ever-increasing ranks of devil legions. His evil passions do not die with him; they are intensified, concentrated, and perpetuated in the form of a malignant and mischievous spirit.' [118]