RECORD: Darwin, C. R. n.d. Abstract of Spallanzani, Tracts on the nature of animals and vegetables. CUL-DAR77.92. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 2.2023. RN1
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volumes CUL-DAR 76-79 contain material for Darwin's book Cross and self fertilisation (1876).
Spallanzani, Lazzaro. 1803. Tracts on the nature of animals and vegetables. Trans. from the Italian by J. G. Dalyell. 2d ed. 2 vols. Edinburgh. See CUL-DAR119
[92]
Excess of pollen
Spallanzani N. Hist. Vol. 2. p. 145 no harm followed from bathing whole of ovule of Batrachian with semen, whilst an astonishing small amount (p. 156) sufficed— With newts an pure semen did not answer, required dilution with water.—
145 no harm from bathing whole ovule with sperm
151
[Cross and self fertilisation, p. 24: "After having acted in this manner during two seasons, I remembered that Gärtner thought, though without any direct evidence, that an excess of pollen was perhaps injurious; and it has been proved by Spallanzani, Quatrefages, and Newport,† that with various animals an excess of the seminal fluid entirely prevents fertilisation."]
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 29 May, 2023