THE ADDER. 101 
the average diameter when distended 1 inch, and the 
average circwuunference 3} 
o 
iuches ; so that the total 
Fie. 25.—Gou iter or ADDER, DISTENDED TO SHOW CAPACITY. 
capacity 1s considerable. It is only divided from the 
stomach by a sheht constriction. (These points are 
clearly seen in the illustrations of the distended gullet 
