0-t SALMONID.E. 



outlet, which is in length about the quarter part of the inward 

 circumference of the egg ; this yolk, which looks like a bag, 

 becomes the belly, and without entrails. 



" 5. On this expanded belly, especially in the Salmon 

 Trout, are plain to be seen many blood-vessels, divided into 

 smaller branches, and so plain, that the arteries may be dis- 

 tinguished from the veins with the naked eye. And it is no 

 wonder, for as it has been mentioned that this hanging belly 

 is larger in proportion to the fish, so the blood-vessels are in 

 proportion expanded, and are to be seen very plainly, so long 

 as the fish remains in a state of transparency like water. 



" 6. If you open one of these bags with a needle, a liquor 

 runs out of a yellowish colour, which is the nutriment of the 

 fish, then the bag shrinks in like an empty bladder, and the 

 fish dies. 



" After the fish has been out of its egg about a fort- 

 night, a thin skin separates from the inward coat of this 

 hanging belly, and then it shrinks so much that it appears as 

 entirely vanished. After the belly is entirely shrunk to its 

 proportionable size, this inward skin shrinks likewise, and 

 becomes the intestines ; from the mouth it forms a passage 

 into the stomach, and continues more narrowly contracted 

 and formed into intestines which lay one over another to the 

 outlet in the belly. 



" It is farther to be observed that the heads of the Trout, 

 when they first have the shape of fishes, have not yet all the 

 usual shape or form, they look as if the snout was chopped 

 off near the eyes ; but as their bellies shrink, their heads 

 grow, the mouths are formed, and after about three weeks 

 the heads get their proper shape. 



" Lastly, I shall make a few additions, which flow from 

 the former observations, and are the result of experiments, 

 which at this present occasion I have no inclination to 

 publish. 



