The Museum of Natural History With Introductory Essay On the Natural History of
The Museum of Natural History With Introductory Essay On the Natural History of
Richardson John
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And, firstly, as respects the organs of respiration which are chiefly to be noted on account of their singular com- munication with the air by means of two nostrils situated at the top of the head in the true whales, and by a single opening similarly placed in the dolphins; in the herbivorous species these passages terminate in front of the muzzle, as in mammalia generally. Hav- ing, on several occasions, dissected the common porpoise with very great care, we are in a position to testify to the... accuracy of Baron Cuvier's account of the singular manner in which the windpipe terminates, especially within a vertical extension of the pharynx, which is commonly designated the spouting apparatus, the exter- nal openings above being vulgarly called the blow-holes. "If we trace the oesophagus upwards, " says Cuvier, " we find that when it arrives opposite the pharynx, it appears to divide into two passages, of which one is continued onwards to the mouth, while the other mounts to the nose; this latter passage being sur- rounded with mucous glands and fleshy muscular bundles.
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