i 
onal 
ANIMAL REPRODUCTIONS. 44% 
MEMOIR It. 
Havine myfelf beheld forne of the prodigies 
prefented by the regenerating head of the {nail, 
f wifhed to know what M. Adanfon thought of 
the refult of my experiments, and I requefted 
him to read the preceding treatife, which was 
publifhed in the ‘fournal de Phyfique 1777. He 
did fo, and wrote me on the 10 of January 1775. 
‘IT have read your excellent Memoir on the 
* reprodudtion of the head of fnails, with all the 
“ attention it deferves ; and the perufal only tends 
£ to confirm me more and more, in what a courfe 
‘of expetiments, continued nearly ten years, 
‘fince 1768 until the prefent day, on feveral 
* thoufand {nails, has taught me, namely, that 
‘when the integral parts of {nails, whether the 
« head entire, the eye or the oculated horn, the 
‘ upper jaw are radically extirpated, or cut be- 
© low the origin, they are not reproduced, either 
© under the fame form, or with the fame organi- 
‘ zation as before. You have decollated two or 
* three dozen of fnails, 8 and 12 May 1777. I 
‘believe it. You fevered the heads, as 1 myfelf 
* did, two lines beyond the origin; that is, to- 
* wards the opening of the parts of generation. 
2.3 © You 
