lt VOYAGE IK SEARCH 



dixes, each margin of which is nearly of the 

 fame length. 



Phyfiologifts have in a very ingenious man- 

 ner explained, how amphibious animals were 

 able to remain lb long under water, by means of 

 the foramen ovale ; but having examined with 

 the greatefl attention the heart of this feal, I law 

 in it no foramen ovale. It is probably the fame 

 with a number of other amphibious animals. 

 Thefe inquiries will perhaps one day lead to a 

 difcovcry of the caufe on which depends the 

 aftonifhing faculty that thefe animals poffefs of 

 living alike under water or in the air. 



Each lung is in a manner divided in two, by 

 a tranfverfal fiflure. 



The ffomach, which in fhape nearly ap- 

 proaches that of the hog, was filled with a great 

 quantity of calcareous fand, in which were fecn 

 fhclls of cuttle-filh, and a few fhell-fifli, ftill 

 quite entire. The firft labour of digeliion feemed 

 to be to deftroy the fliell of thefe fifh, whence 

 refults a fand, which appears not to follow the 

 pafTage of the intelHnal canal. Thefe amphi-. 

 bious animals probably vomit it forth the lame 

 as feveral reptiles bring up again the bones of 

 the animals on which they live. This fand 

 is, perhaps, a fort of ballad, which affords 

 them the means of keeping at the bottom of the 

 fea, at very great depths. 



The. 



