. The birds of America : from drawings made in the United States and their territories . cave. The posterior aperture of thenares is oblongo-linear, margined with acute papillae, the space between itand the ridges also papillate. The nostrils are oblong, 3twelfths in length, \\ twelfths inheight, entirely covered by thebristly reversed feathers. Theaperture of the eye is 4^ twelfthsin width. That of the ear hori-zontally oblong, 35 twelfths inlength, and 2 twelfths in height. The heart is of moderate size,broadly conical, 1 inch 2 twelfthslong, 1 inch 1 twelfth in breadthat the base. The liver
. The birds of America : from drawings made in the United States and their territories . cave. The posterior aperture of thenares is oblongo-linear, margined with acute papillae, the space between itand the ridges also papillate. The nostrils are oblong, 3twelfths in length, \\ twelfths inheight, entirely covered by thebristly reversed feathers. Theaperture of the eye is 4^ twelfthsin width. That of the ear hori-zontally oblong, 35 twelfths inlength, and 2 twelfths in height. The heart is of moderate size,broadly conical, 1 inch 2 twelfthslong, 1 inch 1 twelfth in breadthat the base. The liver is verysmall, the right lobe much largerthan the left, the former being 11twelfths long and 1 inch broad,while the latter is 101- twelfthslong and 7 twelfths in is no gall-bladder. The oesophagus, a b c, is 6£inches long, and of the nearly uni-form width of 6 twelfths. On en-tering the thorax, at a, it curvesconsiderably to the left side, andbecomes very muscular; the pro-ventriculus, b c, has a breadth of1\ twelfths. The stomach, c d,is of moderate size, of a broadly. THE IVORY-BILLED WOODPECKER. 221 elliptical form, directed a little towards the right, somewhat compressed, 1inch 2 twelfths long, and of about the same breadth. The muscular fasciculion the proventriculus are extremely large. On the stomach also they are ofgreat size, and the greatest thickness of its muscular coat is lj organ is completely filled with very hard seeds of different kinds, andsome pulpy matter, but without any insects or larvas. Its inner coat is thin,dense, very tough, nearly smooth, and of a dusky brown colour. The pro-ventricular glandules, which are very small, form a belt 1 inch in intestine, d efg h, is of moderate length and very wide. The duodenumcurves at the distance of 3\- inches. The pylorus is about two-twelfths inwidth, with an elevated margin, and allows the untriturated seeds and otherrefuse to pass into the intestine, which in some parts i
Size: 1084px × 2305px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1840, booksubjectbirds, bookyear1840
