io. 4*. 
EXPLANATION OF THE PLATES. 
The eye, in the state in which it was delivered to us for dissection. 
The eye, after a transverse section had been made, shewing the magnitude of 
the internal cavity of the eye, the thickness of the sclerotic coat, the choroid 
having been separated from the sclerotic, to which it closely adhered, |and 
turned aside, containing within it the retina. 
A representation of a beak of one of the cuttle fishes; it was found in the 
stomach of the animal. 
* These are very nearly of the natural size, 
