ANIMAL REPRODUCTIONS. 274 
-£ Obfervations of this defeription could not fail 
* to attract the attention of naturalifts: and the 
* celebrated Scheffer of Ratifbon, in particular, 
‘has put this phenomenon beyond all difpute. 
‘¢ That eminent naturalift, having frequently re= 
‘ peated experiments on fnails, had the head and 
© alfo the tail reproduced. Laft year he publith- 
"¢ ed his.experiments in a tract illuftrated with co- 
* loured figures. 
‘ They have lately been repeated. On the 
‘ninth of May, twenty-fix fnails were deca- 
¢ pitated : Only two died from the operation ; all 
« the reft lived, and regenerated the head.’ 
In the year 1769, Sig. Ab. Troilo, librarian to 
his Serene Highnefs the Duke of Modena,. and 
Emeritus Profeflor of Experimental Philofophy 
in the fame univerfity, engaged in the fubject, 
and next year communicated his refults to me. 
_ On the fifth of May, one hundred and twenty- 
four fnails were mutilated. The whole head, anda 
portion of the neck were cut off 68. From 28, the 
head andno more. From other 28, one half of it, 
that is, the portion including the two fmaller 
horns, the lips, mandibles, tooth, and the various 
mulfcles appertaining to thefe parts. 
Forty-nine of the firft divifion had. perifhed 
again{t the twenty-ninth: but one began to re- 
pair a portion of the head: fome others had re- 
generated the left sane horn, and all. the reft, 
Vou. Il, S except 
