ANIMAL REPRODUCTIONS, 333 
tions, which were only partial reproductions of 
* parts.’ ’ | 
To the numerous experiments and doubts of 
my eminent correfpondent, | fhall oppofe only 
the letter to me from the Abbé Spallanzani, 
cited in the beginning of this treatife, wherein 
he details all his precautions to avoid error. [ 
fent M. Adanfon a copy of this letter, but it did 
not produce that effect on his mind which I ex- 
pected ; nay, he ftill perfifted in his doubts when 
he wrote to me, 20 July 1775. * The various 
‘ parts amputated, or torn, not only from differ- 
€ ent fpecies of {nails, but alfo from feveral other 
€ aquatic animals, as frogs, toads, newts, have 
¢ produced no organized reproduction to me, as 
‘the mutilated part did to Sig. Spallanzani. 1 
‘have diverfified the experiments, which my 
“€ friend Mr Needham and fome other obfervers 
¢ of this rank have witnefled, to fuch a degree, 
¢ that we all efteem it certain, when the operation 
‘has been complete, the reproduction is but a 
* ftump, that is, a mafs of flefh unorganized or 
‘ differently organized. And Signor Spallanzani 
¢ fhould know that the obfervations of our moft 
* celebrated anatomifts have proved, that the re- 
¢ production of the tails of lizards, which are fo 
$ common, although externally well formed, 
- € prefent no regular offification as the reft ; nor 
§ haye they any internal vertebrae.’ 
M,. Adanfon 
