Eagle's Ampulal

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“Part of the superior vertical semicircular canal, showing its ampulla (which is the dilatation of the base of any semicircular canal), nerve of ampulla, artery connective tissue of the perilymph, X3, a, that part of the vestibule (alveus) next to the ampulla; b, the idlatation of the ampulla at its vestibular opening; c, where it passes into the canal proper; d, the canal, furnished with connective of the perilymph along its concave border and sides, as appears clearly at the sections e and f; g, nerve of the ampulla; h, artery of the connective tissue, running beneath it, remote from the wall of the duct.” Elliot Coues, 1884


Bird Anatomy


Elliot Coues Key to North American Birds (Boston, MA: Estes and Lauriat, 1884)


TIFF (full resolution)

2400×2272, 355.8 KiB

Large GIF

1024×969, 57.0 KiB

Medium GIF

640×605, 31.9 KiB

Small GIF

320×302, 13.3 KiB