Mr. Yarrell's Notes on Comparative Anatomy. 319 



nating quadrupeds. Intestinal canal nearly of uniform calibre throughout, 

 without ccEcum, measuring 51 feet in length. Liver small in proportion 

 to the other viscera, consisting of a single lobe on each side, that on the 

 left being but half as large as the lobe on the right. Kidnies of a beau- 

 tiful appearance externally, from the regularity of the hexagonal figures 

 by which their surfaces were divided. The subject a male; the sexual 

 organ with its appendages of large size, the penis having attached to its 

 inferior surface a strong (retractor) muscle, by which it was drawn back 

 and folded upon itself within the cavity of the abdomen. 



The posterior half of the sclerotic coat of the eye cartilaginous and of 

 considerable substance ; from its firmness reminding the observer of the 

 bony ring in birds : the crystalline lens nearly spherical. 



ToURACO. [Corythaix Persa, 111.] 



General appearance of the inside of the body of this bird inclining 

 rather to that of the Perchers than of the Gallince. The ^rac/iea dilated 

 at both extremities and slightly also at its centre ; the single pair of 

 muscles of voice very large. Os furcatorium closely united by a mem- 

 brane to the sternum. (Esophagus wide, without any crop. Stomach 

 membranous. Duodenum large. Intestines short, without ccecal ap- 

 pendages. 



Javanese Peacock. [Pavo Javanicus, Horsf.] 



Stomach a true gizzard; intestinal canal 4 feet 9 inches in length, 

 having two ccBca, one of 10 inches, the second of 12 inches. 



Silver Pheasant. 5 [Phasianus nycthem^rus, Linn.] 

 A female silver Pheasant, which had begun to assume the plumage of 



the male, exhibited on examination the peculiar disease of the sexual 



organs which is ascertained to be the cause of the appearance of this 



neutral colour in the feathers. 



Two instances of the female of the Golden Pheasant ( Phasianus pic- 



tus, Linn.,) imdergoing the same change, have lately occurred. 



Hybrid Pheasant. 

 A female bred between the golden and common Pheasant. — Ovarium 

 not more than one-fourth of the natural size ; containing no appearance 



y2 



