The œsophagus, Fig. 1, _a b c_, is 3 inches 10 twelfths long, its walls very thin, its inner or mucous coat thrown into longitudinal plates; its diameter at the middle of the neck 5 eighths, diminishing to 4 twelfths as it enters the thorax. It then enlarges and forms the proventriculus, _c e_, which has a diameter of 8 twelfths; the glandules are cylindrical, very numerous, and arranged in a complete belt, half an inch in breadth, in the usual manner, as seen in Fig. 2, _b c_. The stomach, properly so called, Fig. 1, _d g_, is oblong, 11 twelfths in length, 8 twelfths in breadth; its muscular coat moderately thick, and disposed into two lateral muscles with large tendons; its epithelium, Fig. 2, _c d e_, thick, hard, with numerous longitudinal and transverse rugæ, and of a dark reddish colour. The duodenum, _f g h_, curves in the usual manner at the distance of 1-1/4 inch, ascends toward the upper surface of the right lobe of the liver for 1 inch and 10 twelfths, then forms 4 loops, and from above the proventriculus, passes directly backward. The length of the intestine, _f g h i_, is 16-1/2 inches, its diameter 2-1/4 twelfths, and nearly uniform as far as the rectum, which is 1-1/4 inch long, at first 3 twelfths in diameter, enlarged into an ovate cloaca of great size, Fig. 3. _b_; the cœca _a_, _a_, 41 twelfths long, cylindrical, 1/2 twelfth in diameter, obtuse. The trachea, Fig. 1. _k_, _l_, is very wide, flattened, its rings unossified, its length 2-9/12 inches, its breadth 3 twelfths, nearly uniform, but at the lower part contracted to 2 twelfths. There are 75 rings, with 5 inferior blended rings, which are divided before and behind. The bronchi, Fig. 1. _m_, _m_, are wide and rather elongated, with about 25 half rings. The contractor muscles are extremely thin, the sterno-tracheal slender; there is a pair of inferior laryngeal attached to the first bronchial rings. [Illustration: Fig. 1.] [Illustration: Fig. 2.] [Illustration: Fig. 3.]