Greaf bafr 



LETTER XXXVI. 



T'o the same. 



Sept. ITJ i. 



EAR SIR, The summer through I have seen 

 but two of that large species of bat which I call 

 Ves-pertilio altivolans^ from its manner of feeding 

 high in the air ; I procured one of them, and 

 found it to be a male ; and made no doubt, as 

 they accompanied together, that the other was a 

 female ; but, happening in an evening or two to 

 procure the other likewise, I was somewhat disappointed, when it 

 appeared to be also of the same sex. This circumstance, and the 

 great scarcity of this sort, at least in these parts, occasions some 

 suspicions in my mind whether it is really a species, or whether it 

 may not be the male part of the more known species, one of which 

 may supply many females ; as is known to be the case in sheep and 

 some other quadrupeds. But this doubt can only be cleared by a 

 farther examination, and some attention to the sex, of more 

 specimens ; all that I know at present is, that my two were amply 

 furnished with the parts of generation, much resembling those of a 

 boar. 



