RECORD: Darwin, C. R. n.d. Abstract of Flower, Pagets lectures, 1853. CUL-DAR205.6.70. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 11.2021. 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 volume CUL-DAR205.6 contains notes on embryology [pigeons].


[70]

Flower. Pagets Lecture 1853. p. 25. About seals shedding Hair as soon as or before being born.

Guinea Pigs – Bats - some Insectivora

Correlation with early shedding of teeth - appears as all shed their milk teeth very early & shortened & one stage partly missed yet not fur.

if embryonic period.

You wd look at the two sets of teeth like the long succession of teeth in sharks. Surely it is quite possible that the milk teeth may represent teeth of progenitor in some mammals, & have been aborted in other mammal— like Nauplius form in Crustacea.

(over)

[in margin:] (Embryology?)

[70v]

Get particulars about seals – How early do they shed milk-teeth – is it general? very early

Does F. know of other cases of early shedding of first coat of Hair besides in seals. Paget say he "believes there are other cases.

[In box:] To understand likeness of milk teeth to the adults of progenitors, the milk & adult teeth of the progenitor wd have to be like.

Skull of Barbarossa

Bartlett says Seal sole animal that sheds Hair as soon as born

Some Rodents; at least Hares, shed first teeth in womb & yet do not shed Hair

[Left margin:] Marsupials not having first dentition is greatly opposed to 2 sets being the normal law.

[Right margin:] Primordially, as with fish, first & second dentition were the same.


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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)

File last updated 25 September, 2022