Sanitation, Diet, Disease, etc. 319 the manner in which food is eaten, is there such a waste of salt in India. Between 1870-71 and 1880-81 the consumption of salt in- creased by 19 per cent., and during the next ten years the in- crease was 211/2 per cent. The increase of population in each decade is about 10 per cent., so that the ratio of increase in the consumption of salt was about twice as great as the ratio of increase in the population. And as the consumption is almost entirely human, it seems evident that if the people had enough salt twenty years ago, they have more than enough now. In the interior of the Himalayas the price of salt is very high, not on account of the duty, for the salt consumed there is imported across the frontier duty-free, but as a result of the cost of transit. Excluding such exceptional tracts as Kumaun, Garhwal, and the Naga Hills, where the price of salt may be said to be about 7 seers to the rupee (about 21/4 annas per seer), the highest price of salt in India anywhere is 8 seers per rupee (or 2 annas per seer). The consumption per head being 11lb, the annual cost of salt per head is equal to 11 annas, less than one anna (exactly eleven pie) per month. The average price may, however, be taken to be about 10 seers to the rupee, and the annual cost per head at this rate is under 9 annas, or about 9 pie per month. It may be assumed that the highest cost per head is one anna monthly, which is less than one penny at the present rate of exchange. This is an extreme and exceptional price, for salt ranges at about 8 seers to the rupee in comparatively but few places. Now while discussing the assumed connexion between salt and leprosy, it is necessary to enquire whether the price of this article prevents the native from procuring the amount of salt required to keep his body in proper health. It is difficult to say exactly how much salt a working man actually requires. It is certain "that the various saline matters are