Note 74 — Chapter II

‘The fruits used by the inhabitants of southern climes do not contain, in a fresh state, more than 12 per cent. of carbon; while the blubber and train-oil which feed the inhabitants of polar regions contain 66 to 80 per cent. of that element.’ Liebig's Letters on Chemistry, p. 320; see also p. 375, and Turner's Chemistry, vol. ii. p. 1315. According to Prout (Mayo's Human Physiol. p. 136), ‘the proportion of carbon in oily bodies varies from about 60 to 80 per cent.’ The quantity of oil and fat habitually consumed in cold countries is remarkable. Wrangel (Polar Expedition, p. 21) says of the tribes in the north-east of Siberia, ‘fat is their greatest delicacy. They eat it in every possible shape; raw, melted, fresh, or spoilt.’ See also Simpson's Discoveries on the North Coast of America, pp. 147, 404.