The highlands of the peninsula, which are cut off from the encircling ranges by the broad Indo-Gangetic plain, are divided into two unequal parts by an almost continuous chain of hills running across the country from west by south to east by north, just south of the Tropic of Cancer.
It is admitted that he conducted by means of agents a large business in timber in the Gangetic Sundarbans.
His armies crossed the plains beyond the Caspian, penetrated the wild mountain passes northwest of India, and did not turn back until they had entered on the Indo-Gangetic plain.
The winds which pass northward over India blow as south-easterly and easterly winds over the north-eastern part of the Gangetic plain, and as south winds up the Indus.
This no doubt is fabulous, but it is hard to say how early communication with Gangetic India began.