. Zoology : for students and general readers . Zoology. ANATOMY OF THE GUNNER. 441 superior (Os) and inferior (Oi), arise from the front of the orbit near the interorbital septum. The disposition of the. Pig. 400.— Anatomy of the brain of tlie Gunner, dorsal and side view.—Drawn bv C. S. Minot. recti is very constant, but tlie obhqui vary considerably in their origin in different Vertebrates. If a perch be cut through transversely, so that the section passes through the fore-part of the air-bladder, and the anterior portion then looked at from behind, a very instructive view will be obtained,
. Zoology : for students and general readers . Zoology. ANATOMY OF THE GUNNER. 441 superior (Os) and inferior (Oi), arise from the front of the orbit near the interorbital septum. The disposition of the. Pig. 400.— Anatomy of the brain of tlie Gunner, dorsal and side view.—Drawn bv C. S. Minot. recti is very constant, but tlie obhqui vary considerably in their origin in different Vertebrates. If a perch be cut through transversely, so that the section passes through the fore-part of the air-bladder, and the anterior portion then looked at from behind, a very instructive view will be obtained, as in Fig. 401. The best sections can be made by first freezing the fish. The vertebral column (F) appears a little above the middle ; overlying it is the neural canal with the spinal cord ; im- mediately below it is the descending or dorsal aorta {Ao), on either side of which follow the kidneys {K), resting directly upon the air-bladder {BI). Lowermost is the body-cavity, with the stomach [S'), and intestine (/»), surrounded by the liver, which has been almost entirely removed. The rest of the section is occu]iied by muscles, which, it will thus be seen, make up the main bulk of the body. (Minot.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Packard, A. S. (Alpheus Spring), 1839-1905. New York : Henry Holt
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1879
