The result was the system of four castes (varna, i.e."
Bengalis, whether Brahmans or of other castes, frequently go bareheaded.
These castes, as well as the mandarins, who form a class by themselves, are exempt from tax or forced service.
The number of half-castes is remarkably small, at the census of 1904 the number of " mixed and others," which The following is the official estimate of the population on the 31st of December 1908: Europeans 91,443, natives 998,264 (including 7386 " mixed and others "), Asiatics 116,679; total 1,206,386.
As regards the numerous groups included under the term of Sudras, the distinction between" clean "and" unclean "Sudras is of especial importance for the upper classes, inasmuch as only the former - of whom nine distinct castes are usually recognized - are as a rule considered fit for employment in household service.