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Received June ip, I7<5p. 
XXIX. An Account of the Lymphatic Sy- 
Jietn in Fijh* By the fame. 
Read Nov. i6,T' N the foregoing paper on the lympha- 
fyftem in a turtle, I have made no 
mention of the manner of difcovering, and demon- 
ftrating thofe velfels; the reafon was, there is no 
difficulty in either the one or the other ; for, in that 
animal the mefentery being very thin and tranfpa- 
rent, and the ladleals pretty large, they are more 
readily difcovered than in any other animal ; thence 
it happened that I faw thofe veffels in a turtle long 
before I difcovered them in birds and fifh, and that 
too by chance, and when I was not intent upon this 
inquiry. And fince I drew up the preceding ac- 
count, I have found that Mr. John Hunter, in a 
defcription of the flrudure of a crocodile, had 
mentioned, by the way, that it had ladeals. Pro- 
feffor Monro, of Edinburgh, as I have been informed, 
likewife faw the ladteals in a turtle about four years 
ago. As it is natural for men, engaged in the fame 
inquiries, to be defirous of afeertaining their priority 
in the difeoveries, even when there is little merit in 
the making them, I therefore take this opportunity 
of doing juftice to thole gentlemen, and at the lame 
time 
