In all classes, it may be noted, the average acuity was between 12 and 13 metres (13 to 14 yards), and ranged between V.A. = 2.15 and V.A. = 2.03. The maxima distances, at which the position of the letter was recognised, were:— Shōlaga, 18m; Paraiyan, 19m; Badaga and Dīkshitar Brāhman, 20m. No cases of extraordinary hyper-acuity were met with. The nine classes, or groups of classes examined, cover a wide range of degrees of civilisation from the wild jungle Chenchus, Shōlagas, and Urālis, to the cultured Brāhman. And, though the jungle man, who has to search for his food and mark the tracks and traces of wild beasts, undoubtedly possesses a specially trained keenness of vision for the exigencies of his primitive life, the figures show that, as regards ordinary visual acuity, he has no advantage over the more highly civilised classes.
There were, in 1904-05, two Board upper primary schools for the Chenchus of the Kurnool district, which were attended by seventy-three pupils, who were fed and clothed, and supplied with books and slates free of charge.
Chēnu (dry field). — An exogamous sept of Kamma.
Chēppāt.__A sub-division of Mārān.
Chērukāra.— Recorded, in the Travancore Census Report, 1901, as a sub-division of Nāyar.
Cheruku. — Cheruku (sugar-cane) or Cherukula has been recorded as an exogamous sept of Bōya, Jōgi and Odde.
Cheruman.— The Cherumans or Cherumukkal have been defined as a Malayālam caste of agricultural serfs, and as members of an inferior caste in Malabar, who are, as a rule, toilers attached to the soil. In the Madras Census Report, 1891, it is stated that "this caste is called Cheruman in South Malabar and Pulayan
