. The birds of America : from drawings made in the United States and their territories . placedobliquely, A\ inches in breadth, 2 inches 10 twelfths in length; the leftmuscle 1 inch 9 twelfths thick, the right 2 inches; the epithelium forms twotransversely, elliptical, concave, grinding surfaces, of great density (but isaltogether wanting on the rest of the inner surface, although this may havehappened after death). The proventricular glands are very small, cylin-drical, 2\ twelfths in length, and form a belt 2 inches in breadth. Theduodenum curves at the distance of 8 inches, and there are fo
. The birds of America : from drawings made in the United States and their territories . placedobliquely, A\ inches in breadth, 2 inches 10 twelfths in length; the leftmuscle 1 inch 9 twelfths thick, the right 2 inches; the epithelium forms twotransversely, elliptical, concave, grinding surfaces, of great density (but isaltogether wanting on the rest of the inner surface, although this may havehappened after death). The proventricular glands are very small, cylin-drical, 2\ twelfths in length, and form a belt 2 inches in breadth. Theduodenum curves at the distance of 8 inches, and there are formed 12 foldsby the intestine, which is 10 feet in length, 10 twelfths in width at theupper part, afterwards 1\ twelfths, until towards the rectum, when it 196 THE CANADA GOOSE. enlarges to 9 twelfths. The coeca are 9^ inches long, 7 twelfths in theirgreatest width, but only 2 twelfths at the commencement, their extremitynarrow but obtuse. The rectum is 8^ inches long; there is no remarkable cloacal enlargement. The sternum is very similar to that of a Swan; its length 6^ inches, its. THE CANADA GOOSE. 197 breadth at the anterior costal processes 3 inches; the height of the crest 1inch 10 twelfths. The liver is small, the left lobe, which is 3 inches inlength, covering but a very small portion of the stomach; the right lobe is 5inches in length; the gall-bladder 2 inches 9 twelfths in length, 8 twelfthsin breadth, but contracted to 3 twelfths at the distance of 10 twelfths fromthe extremity, where it enlarges to about 5 twelfths. The heart is 3 incheslong, 2i inches in breadth at the base. The trachea measures 20^ inches in length. At first it inclines a little tothe left side, then on the anterior concave curve of the neck passes graduallyto the right side, along which it proceeds as far as the lower part of theconvex curve, when it separates in front from the neck, and forms a loop orabrupt curve, which is attached to the anterior part of the sternum, betweenthe coracoid bone
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Keywords: ., bookcentury1800, bookdecade1840, bookidbirdsofa, booksubjectbirds
