. The birds of America : from drawings made in the United States and their territories . h smaller than the other, the former being 1 inch 11 twelfthsin length, the latter 1 inch 4 twelfths. There is no gall-bladder. Thestomach, c d e, is very large, roundish, a little compressed, its diameter 1inch 7 twelfths. The proventricular glands are extremely small, and occupya belt 5 twelfths in breadth. The muscular coat of the stomach is very thin,but composed of strong fasciculi, the middle coat is nearly of equal thickness;internally there is a complete epithelium, which, however, although tough,i
. The birds of America : from drawings made in the United States and their territories . h smaller than the other, the former being 1 inch 11 twelfthsin length, the latter 1 inch 4 twelfths. There is no gall-bladder. Thestomach, c d e, is very large, roundish, a little compressed, its diameter 1inch 7 twelfths. The proventricular glands are extremely small, and occupya belt 5 twelfths in breadth. The muscular coat of the stomach is very thin,but composed of strong fasciculi, the middle coat is nearly of equal thickness;internally there is a complete epithelium, which, however, although tough,is very thin, almost membranous, and raised into numerous tortuous rugae,without any part being thicker than another. The pylorus has six marginalroundish fleshy papillae. The duodenum, efg, presents the usual curvature,being folded back upon itself at the distance of 1 inch 8 twelfths; the intes-tine, g h i, then forms several convolutions, and is of great length, but verynarrow, and disposed in 24 folds. Its length is 3 feet 10 inches, its widthVol. IV. 29 210 THE BELTED from lj twelfths to 1twelfth. The cloaca, j k,is globular, 1 inch in diame-ter. There are no cozca;the rectum in its interiorpart has a width of only \twelfth. The trachea is 4 inches 1twelfth long, 3^ twelfths inbreadth at the top, rapidlydecreasing, so that at thedistance of 1 inch to be 2^twelfths, and at the lowerpart 2 twelfths. Its ringsare farm, slightly flattened,excepting those at the top,of which about 12 are car-tilaginous. There are 72rings, the lowest entire ringvery large, with a middlepartition. The lateral mus-cles are very slender, asare the sterno-tracheal; andthere is a very large inferiorlaryngeal muscle insertedinto the first bronchial ring,as well as into the last ringof the trachea. The bronchiare rather short and narrow,of about 15 half rings. Theinferior laryngeal musclesmay be divided into threeportions, an anterior, a mid-dle, and a posterior; andthus supply a desideratu
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectbirds, bookyear1840
