Mercury presides over the western half of the Lohitya river, the Indus, the Sarayū , the Gāmbhīrika, the Ratha , the Ganges and its tributary the Kauśi. He also presides over the countries of Videha , Kāmboja; the eastern half of Mathurā , the Himālayas , the Gomanta , the Citrakūṭa mountains, Saurāṣṭra ; people living on table lands, on the surface of water, in valleys and in mountains; over persons possessing a knowledge of the laws of drink, of mechanics, of music, of writing, of gems, of colour and of perfumes; he also presides over painters, grammarians, mathematicians, physicians, sculptors, spies, jugglers, infants, poets, rogues, tale-bearers, black-magicians, messengers, eunuchs, buffoons, sorcerers and conjurers; over sentinels, dancers and dancing masters; over ghee , gingelly and other oils; over seeds, over bitter flavour, over observers of religious ceremonies, over chemists and mules.