Note 280 — Chapter III
Reading edition
This diminution of casualties is undoubtedly one cause, though a slight one, of the increased duration of life; but the most active cause is a general improvement in the physical condition of man: see Sir B. Brodie's Lectures on Pathology and Surgery, p. 212; and for proof that civilized men are stronger than uncivilized ones, see Quetelet, sur l'Homme, vol. ii. pp. 67, 272; Lawrence's Lectures on Man, pp. 275, 276; Ellis's Polynesian Researches, vol. i. p. 98; Whately's Lectures on Political Economy, 8vo. 1831, p. 59; Journal of the Statistical Society, vol. xvii. pp. 32, 33; Dufau, Traité de Statistique, p. 107; Hawkins's Medical Statistics, p. 232.