The Paraiyans are said by Mr. Francis [56] to have a curious share in the ceremonies in connection with the annual buffalo sacrifice at the Kali shrine at Mangalam in South Arcot. "Eight men of this community are chosen from eight adjoining villages, and one of them is selected as leader. His wife must not be with child at the' time, and she is made to prove that she is above all suspicion by undergoing the ordeal of thrusting her hand into boiling gingelly (Sesamum) oil. On each of ten days for which the festival lasts, this Paraiyan has to go round some part of the boundaries of the eight villages, and he is fed gratis by the villagers during this time. On the day of the sacrifice itself, he marches in front of the priest as the latter kills the buffaloes. The Paraiyans of the eight villages have the right to the carcases of the slaughtered animals." The Paraiyans know the village boundaries better than anyone else, and are very expert in this matter, unerringly pointing out where boundaries should run, even when the Government demarcation stones are completely overgrown by prickly-pear, or have been removed. Mr. Stuart records a custom which prevails in some parts of making a Paraiyan walk the boundaries of a field with a pot of water on his head, when there is any dispute about their exact position. He thinks that the only satisfactory explanation of this is that the connection of the Paraiyans with the soil is of much longer standing than that of other castes. The admitted proprietary right which Paraiyans have in the site known as cheri-nattam, on which their huts stand, is a confirmation of this. These sites are entered as such on the official village maps. They cannot be taken from the Paraiyans, and date from time immemorial. Throughout the whole of the Tamil country it is usual to find that the land allotted for house-site (nattam) is in two portions in every village (Ur). One part is known by the Sanskrit name gramam (village), the inhabited place. The other is called by the Dravidian name cheri (gathering place).