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(21) Vol XI.

p 31. M. Serres says analogue of marsupial bone is in "cavité cotyloïde des Mam:" refers in this to excellent Art. by Is. St Hilaire "Mammifer Dict class d'Hist Nat. Tom X p. 82"

p 70. concludes organs are not simple bodies but composed. (thus kidney in embryo consists of several homologous parts.] &c

p. 146. G. de Buzareingues. Exper. sur la Reproduct &c - finds that viz young rams produces most females offspring & old vigorous rams most males -This seems to hold good.

[Girou de Buzareingues. 1827. Expériences sur la reproduction des animaux domestiques. Annales des sciences naturelles: botanique et biologie végétale, vol. 11: 145-149.]

p 324. same author says bitch had back broken during coupling & was paralysed for several days afterwards behind nevertheless had 7 or 8 young & all, with one exception, which was like father, had hinder extremities either very weak or ill-formed one wanted them entirely, another had them short & then & another cd not move them & consequently all except the one, were drowned.

[Girou de Buzareingues. 1827. Suite des Expériences sur la reproduction des animaux domestiques (I). Annales des sciences naturelles: botanique et biologie végétale, vol. 11: 314-324.]

[28v]

Oct/ 46/

Hooker & Falconer tell me that os coccyges in man varies much in size & in number of vertebraæ.

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Tom XII. p. 5. "Sur l'existence d'un Cloaque observé chez un chien privé de queue' par J. G. Martin."

p 7 had no caudal vertebrae, (adult bitch) but a coccyx ill formed of 3 moveable pieces -spinal marrow ceases in middle of 3d. lumbar vertebra - below that a queue-de-cheval like that of man.

p 11. M. Serres has shown a relation between prolongement spinal cord & tail: embryos of man, & tailess bats - many monkeys, as ourangs, some rodents & batrachians, have tails, into which spinal matter descends, as in birds, but as embryo grows spinal marrow retracts itself, & tail disappears more or less completely. M. Serres proposition is that spinal marrow governs development of tail.

p 13 This case of dog shows that monstrosity does not always as some have supposed

(a Back) typify structure in lower class; for this holds good only where monstrosity is due to arrest of development; in this case it [thought] structure has undergone a metamorphosis more than ordinary.

[J. G. Martin. Sur l'existence d'un Cloaque observé chez un chien privé de queue. Annales des sciences naturelles: botanique et biologie végétale, vol. 12: 5-14.]

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a In a cat with tail one inch long, & spinal marrow was arrested at level of fourth lumbar vertebra. How is spinal marrow in baboons &c which have externa rudiment of tail??