360 THE EIDER DUCK. 



breadth. The left muscle of the stomach, d e, is H inches thick, the right, 

 g h, 1 inch 2 twelfths; the epithelium very thick, and of a horny texture, 

 with two elliptical convex grinding plates, of which the right is 2 inches in 

 length, the left 1 inch 7 twelfths. Intestine 74 inches long; the width of 



Fig. 1. 



