[7] See Croonian Lecture, 1881, in forthcoming issue of Phil. Trans.
[8] Natural History of Ceylon, p. 481.
[9] This fact is also stated by Bingley, Animal Biography, vol. iii. p. 454, and is now turned to practical account in the so-called 'Oyster-schools' of France. The distance from the coast to Paris being too great for the newly dredged oysters to travel without opening their shells, they are first taught in the schools to bear a longer and longer exposure to the air without gaping, and when their education in this respect is completed they are sent on their journey to the metropolis, where they arrive with closed shells, and in a healthy condition.
[10] Bingley, loc. cit., vol. iii. p. 449.
[11] De l'Espèce et de la Classe, &c., 1869, p. 106.
[12] A Londoner's Walk to Edinburgh, p. 155 (1856).
[13] Descent of Man, pp. 262-3.
[14] The facts, however, in order to sustain such conclusions, of course require corroboration, and it is therefore to be regretted that Mr. Lonsdale did not experimentally repeat the conditions.
[15] Journal Linn. Soc. vol. xiv. p. 406 et seq.
[16] Mag. Nat. Hist. 1831, vol. iv. p. 346.