Bibliography

Descent 2d ed.: The descent of man, and selection in relation to sex. By Charles Darwin. 2d edition. London: John Murray. 1874.

Westropp, Hodder Michael. 1866. On the analogous forms of implements among early and primitive races. Memoirs read before the Anthropological Society of London 2 (1865–6): 288–93.

Westropp, Hodder Michael. 1871. On the analogies and coincidences among unconnected nations. [Read 19 June 1871.] Journal of the Anthropological Institute of Great Britain and Ireland. 1 (1872): 221–6.