is not clear. The termination nādu means a country. These sections are further divided into exogamous sections called vaguppus. The Mēl-nādu Kallans have three sections called terus or streets, namely, Vadakku-teru (north street), Kilakku-teru (east street), and Tērku-teru (south street). The Sīrukudi Kallans have vaguppus named after the gods specially worshipped by each, such as Āndi, Mandai, Aiyanar, and Vīramāngāli. Among the Vellūr-nādu Kallans the names of these sections seem merely fanciful. Some of them are Vēngai puli (cruel-handed tiger), Vekkāli puli (cruel-legged tiger), Sāmi puli (holy tiger), Sem puli (red tiger), Sammatti makkal (hammer men), Tirumān (holy deer), and Sāyumpadai tāngi (supporter of the vanquished army). A section of the Tanjore Kallans names its sections from sundry high-sounding titles meaning King of the Pallavas, King of Tanjore, conqueror of the south, mighty ruler, and so on."
Portions of the Madura and Tanjore districts are divided into areas known as nādus, a name which, as observed by Mr. Nelson, is specially applicable to Kallan tracts. In each nādu a certain caste, called the Nāttan, is the predominant factor in the settlement of social questions which arise among the various castes living within the nādu. Round about Devakotta in the Sivaganga zamindari there are fourteen nādus, representatives of which meet once a year at Kandadēvi, to arrange for the annual festival at the temple dedicated to Swarnamurthi Swāmi. The four nādus Unjanai, Sembonmari, Iravaseri, and Tennilai in the same zamindari constitute a group, of which the last is considered the chief nādu, whereat caste questions must come up for settlement. For marriage purposes these four nādus constitute an endogamous section, which is sub-divided
