File:The birds of America - from drawings made in the United States and their territories (1840) (14565101919).jpg

Identifier: birdsofamericafr06audu (find matches)
Title: The birds of America : from drawings made in the United States and their territories
Year: 1840 (1840s)
Authors: Audubon, John James, 1785-1851 Bowen, John T., ca. 1801-1856?, lithographer
Subjects: Birds Birds
Publisher: New York : Published by J.J. Audubon Philadelphia : J.B. Chevalier
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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arge pointed papilla on each side, flat above, witha median groove for half its length, afterwards convex, the tip acute. Thereis a large gular sac, although covered by feathers. The oesophagus is 2 feet7 inches long, of great width in its whole extent, its diameter opposite theglottis being 2\ inches, in the other parts from 2 to If. Its walls are verythin, but with the external muscular fibres distinct; the inner coat longitudi-nally plicate. The heart is of moderate size, 1 inch 10 twelfths in length, ll in breadth.The aorta branches immediately in the usual manner, sending off to the lefta common carotid and subclavian, which branches at the distance of 7^twelfths; to the right the same; and more to the same side, the carotid pro-perly so called, which is smaller than either of the other vessels. The liveris of moderate size, its lobes very unequal, the left 2^ inches, the right 3^inches in length. There is an enormous accumulation of fat in the omentum, 120 THE GREAT WHITE HERON.
Text Appearing After Image:
THE GREAT WHITE HERON. 121 covering nearly the entire surface of the proventriculus and stomach, andextending under the intestine, being in one place 9 twelfths thick. On entering the thorax the oesophagus immediately enlarges to 2^ inches,and gradually increases to 3, which is the greatest breadth of the proven-triculus, a b c. The stomach, c p e, is a very large round sac, 3 inches inwidth, a little compressed, with roundish tendons, p, f inch in diameter; itsmuscular coat extremely thin, and formed of very slender fasciculi; theinner coat soft and smooth. The proventricular glands form a complete belt,1^ inches in breadth, at the upper part of which are numerous irregularlydispersed very large apertures of mucous crypts. The pyloric lobe of thestomach, e, is globular, 9 twelfths in diameter. The aperture of the pyloruslj twelfths in diameter, without valve. The intestine, efj k, doubles inthe usual manner, to form the duodenum, efg, at the distance of 6 inches,then proceeds to the

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