6. As regards this classification, which has an imposing air of simplicity and completeness, it is necessary to speak a word of caution. If it is meant that this progressive development of function represents the actual, normal course by which, in the ordinary progress of culture, the savage becomes civilised, it may be said that we are too ignorant of the principles of the development of civilisation to be sure that it was conducted on this or similar lines. Further, it may be well to guard against the supposition that this classification of castes in any way represents existing facts. It must not be forgotten that there are few of the present occupational groups which invariably adhere to the original trade or handicraft which may have caused their association in past times. There may be some like the Âtishbâz or fire-work makers, the N’alband or farriers, and so on, which do really adhere to the business from which they take their name. But this is certainly not the case with the associations of longer standing. The Chamâr is no more always a worker in leather than the Ahîr, a grazier; the Banjâra, a carrier; or the Luniya, a salt-maker. They all at some time or other cultivate or do field labour, or tend cattle. 7. Hence the extreme difficulty of framing a classification of existing castes on the basis of traditional occupation, and this is very clearly brought out in the classification at the last Census, of which an abstract is given in the Appendix to this chapter: when we compare this with their actual occupations as individually recorded this fact comes out clearly. The Ahiwâsi, Baidguâr, Belwâr, Nâik, and Rahbâri, an aggregate of 86,674 persons, are classed as “carriers”—a trade which is carried on by no less than 185,431 individuals. There are about 6½ millions, which include the agricultural tribes; while Mr. Baillie estimates the actual number of persons connected with the land as no less than 34¾ millions. There are 4¾ millions of Brâhmans recorded as priests, but only 412,449 declared this as their occupation. There are about 5½ millions of so-called pastoral trades, while only 336,995 people recorded cattle breeding and tending as their occupation. The instances of this might be largely added to if necessary. What is quite clear is that the existing groups which may have been, and very possibly were, occupational in origin do not now even approximately confine themselves to their primitive occupation.