Footnote 40: [(return)]
This figure is adapted (by the kind permission of the publishers) from one given in Professor K. Pearson's Chances of Death, vol. i. p. 277. For the relation between such records of actual observation and the curves resulting from mathematical calculation of known causes of variation, see ibid., chap, viii., the paper by the same author on 'Contributions to the Mathematical Theory of Evolution,' in vol. 186 (A) of the Royal Society's Philosophical Transactions (1896), and the chapters on evolution in his Grammar of Science, 2nd edition.
Footnote 41: [(return)]
Economic Studies (Longmans, 1895), p. 97.
Footnote 42: [(return)]
Ibid., p. 98.
Footnote 43: [(return)]