62 INTRODUCTION. 



Fig. 2. shews the coiitiiiiiation of the digestive organs. The 

 oesophagus, I, w?, ??, enlarges at ?i, to form the pro vent riciikis, 

 of which the walls, seen in Fig. 5, are thin, the glandules 

 being very short, only about a twelfth of an inch in length, 

 and a twenty-fourth in diameter. The glandules open on small 

 rounded papillae, which are seen enlarged in Fig. 4, while Fig. 

 6. represents sections of three of them enlarged. 



The stomach. Fig. 2, ?^, o, is two inches long, an inch and 

 three-fourths in breadth ; its muscular coat composed of dis- 

 tinct fasciculi, its tendons, o, upw\ards of half an inch in dia- 

 meter ; its cuticular lining thick, soft, of a whitish colour, and 

 w^ith numerous tortuous rug?e, as represented by Fig. 7. 



The intestine, from the pylorus, p, to the extremity, iv, mea- 

 sures only thirty-eight inches. The general diameter of the 

 duodenal portion, p, q^ ?•, is half an inch ; and the remaining 

 part of the small intestine gradually diminishes to four and a 

 half twelfths. The pancreas, 6?, which is seen occupying its 

 usual position in the duodenal fold, is double, and has several 

 ducts, which enter the intestine towards r, where it receives 

 the biliary ducts. The general course of the intestine is similar 

 to that of the Peregrine Falcon. It comes off from the sto- 

 mach at ^j», close to its cardiac orifice, inclines to the left, run- 

 ning along the edge of the stomach, until it nearly reaches the 

 back at ^, w^hen it returns in a contrary direction to ?•, where 

 it curves under the liver, passes upwards and backwards, is 

 convoluted above or behind the stomach, and at length ter- 

 minates in the rectum. 



Fig. 8. represents the latter portion of the intestine, together 

 with the coeca. These organs, a^f^ present a different aj^pear- 

 ance from those of the Falcon, being the one five, the other 

 five and a half inches long, for two inches and a half, only 

 about two and a half twelfths in diameter, but afterwards en- 

 larged to a diameter of ten-twelfths, and finally tapering away 

 to a blunt point. The rectum, which commences at «, is four 

 inches long, including the cloaca ; for two and a half inches it 

 has a diameter of about five-twelfths of an inch, and is then 

 dilated into an oblong sac, c, &, an inch and a half in its greatest 

 diameter. At the commencement of this sac, c, is internally a 



