ANIMAL REPRODUCTIONS. 309 
works, are alfo diftinguifhed in his judicious me 
‘moir on fnails. 
Father Scarella, a learned naturalift 2nd ma- 
thematician, whofe death Brefcia has ftill to Ja. 
ment, had the head of a fnail, decapitated behind 
the large horns, fo completely renewed, that, ex- 
cept in colour,"it could not be diftinguifhed from 
the old one. 
Schaeffer, whofe name alone is a fplendid 
eulogium, does not mention the exact place 
where the cut was made; therefore it is neceflary 
to confult his differtations in German, which I 
have not feen ; but he exprefsly declares, that his 
_ experiments and obfervations confirmed mine in 
the moft ample mahner. He alfo obferves, that 
he has perhaps extended his curiofity a little fur- 
ther than me, probably alluding to the repara- 
tion of the foot. However I had alfo witnefled 
the reproduction of that part which fome call 
the tail, that is, the pofterior extremity of the 
foot ; and I have even obtained reparation of the 
whole foot, or the part on which the animal refts 
in its progreflion. ‘This is faid in the Prodromo, 
p- 70, and repeated in the firft memoir. But I 
rejoice to fee the fame reproduétion confirmed by 
a naturalift no lefs expert, fuch as M. Lavoifier. 
_ The fnails deprived of part of the neck, by the 
Abbé Troilo, perifhed; but thofe that had loft 
the head, and no more; furvived, and repaired it 
Us completely. 
