[14] ‘Beitrage zur Kenntniss,’ etc., 1844, s. 345.
[15] ‘Nouvelles Archives du Muséum,’ tom. i. p. 27.
[16] As quoted by Sir J. Lubbock in ‘Nat. Hist. Review,’ 1862, p. 345. Weijenbergh also raised (‘Nature,’ Dec. 21st, 1871, p. 149) two successive generations from unimpregnated females of another lepidopterous insect, Liparis dispar. These females did not produce at most one-twentieth of their full complement of eggs, and many of the eggs were worthless. Moreover the caterpillars raised from these unfertilised eggs “possessed far less vitality” than those from fertilised eggs. In the third parthenogenetic generation not a single egg yielded a caterpillar.
[17] ‘Entwickelungsgeschichte der Siphonophora,’ 1869, p. 73.
[18] Spallanzani, ‘An Essay on Animal Reproduction,’ translated by Dr. Maty, 1769, p. 79. Bonnet, ‘Œuvres d’Hist. Nat.,’ tom. v., part i., 4to. edit., 1781, pp. 343, 350.
[19] Vulpian, as quoted by Prof. Faivre, ‘La Variabilité des Espèces,’ 1868, p. 112.
[20] Dr. P. Hoy, ‘The American Naturalist,’ Sept. 1871, p. 579.
[21] Dr. Gunther, in Owen’s ‘Anatomy of Vertebrates,’ vol. i., 1866, p. 567. Spallanzani has made similar observations.
[22] A thrush was exhibited before the British Association at Hull in 1853 which had lost its tarsus, and this member, it was asserted, had been thrice reproduced; having been lost, I presume, each time by disease. Sir J. Paget informs me that he feels some doubt about the facts recorded by Sir J. Simpson (‘Monthly Journal of Medical Science,’ Edinburgh, 1848, new series, vol. ii., p. 890) of the re-growth of limbs in the womb in the case of man.
[23] ‘Atti della Soc. Ital. di Sc. Nat.,’ vol. xi., 1869, p. 493.