ANIMAL REPRODUCTIONS. 447 
“and what he narrated at length, in the letter of 
¢ 11 September 47609, that I tran{mitted to you, 
‘ but to which you have never replied a fingle 
'§ word. | 
‘ What is required ® To afcertain whether the 
* head is completely cut off ; and whether the 
* head reproduced contains all the organs of the 
€ original head. What have we to do, that thefe 
“two facts may be proved? The fevered head 
* muft be carefully diffeCted, and the interior ex- 
‘ amined with the utmoft attention, that we may 
* be fatisfied it contains all the organs belonging 
‘to it; and it is neceflary to difleCt the repro- 
* duced head with equal care, arid, by an accu- 
‘rate examination of the interior, to afcertain 
* whether it actually contains every part pertain- 
* ing to the head of a fnail. ‘This has frequently 
*been done by Signor Spallanzani; and now 
* let me afk, whether, in ftrict logic, there is any 
* foundation. for doubting an experiment made 
* with fimilar precaution? Yet you tell me, 30 
¢ July 1769, that the Abbé Spallanzani muft be 
* deceived ; that he fuppofed the whole head was 
* fevered, when only the cap was cut off. You 
© perfift in the fame affertion, 30 July. 19775. 
* Certainly you cannot have attended to the 
* Reggian obferver’s letter, to which I referred 
'*you; therefore allow me to refer you to’ it 
* again. 
* | have 
