BRENT GOOSE. 29 



twelfths in breadth. The stomach contained a large quantity of pure 

 quartz sand. The pylorus is destitute of valve. The duodenum egh, 

 has a diameter of 4^ twelfths, and curves at the distance of 5 inches ; 

 the intestine is disposed in longitudinal folds, there being 16 turns, 

 and measm-es 5 feet 11 inches in length. It retains a pretty uniform 

 breadth as far as the rectum, Fig. 2, a b, which enlarges to 7 twelfths. 

 The cceca, ace, which come off at the distance of 5 inches from the 

 extremity, are b\ inches in length, very narrow, their diameter at the 

 base being about 1 twelfth, towards the end 2 twelfths, and their great- 

 est breadth toward the middle 3^ twelfths. In Fig. 2 is seen part of 

 the oviduct, <? 5, which opens at the distance of ^ inch from the anus, 

 opposite b, and above or anterior to the ureters. In this bird there is 

 no decided cloaca, which is equally the case with other species of this 

 family, and with such birds generally as pass their faeces in a compact 

 cylindrical form. In this respect, Swans, Geese, and Ducks are ana- 

 logous to Pheasants, Grous, and Partridges ; they being in fact aqua- 

 tic Gallinacese. 



The trachea is 11 inches long, its diameter at the upper part 4| 

 twelfths. It is a little flattened above, less so in the middle, and some- 

 what compressed at the lower extremity, where its diameter is 3 

 twelfths. There are 150 free osseous rings, and 15 additional united 

 rings at the lower part. The inferior larynx is destitute of muscles. 

 The space between the last ring of the trachea and the first bronchial 

 ring is large, being 4^ twelfths in length. The bronchi are very short, 

 rather wide, with about 10 incomplete rings, the extremities of which 

 nearly meet. The lateral muscles are strong, and there is a pair of 

 cleido-tracheal, and a pair of sterno-tracheal muscles, the former coming 

 off at the distance of 2^ inches, the latter at that of 1 inch 2 twelfths, 

 from the inferior larynx. The cleido-tracheal muscle is a direct con- 

 tinuation of part of the contractor, but the sterno-tracheal is indepen- 

 dent of them, and attached to two rings of the trachea. The contrac- 

 tor muscle terminates in the solid tube, at the distance of 9 twelfths 

 from the inferior larynx. 



