THE EIDER DUCK. 
71 
breadth. The left muscle of the stomach, d e, is li 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. l. 
