. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. 170 ANATOMY OF VERTEBRATES. 53, is more expanded at its proximal end than in the Crocodile or Lizard; the inner (ulnar) tuberosity is more prominent, the radial crest much more developed: with a base coextensive with one fifth of the shaft of the bone, it extends in a greater proportion from the shaft, affording a powerfid lever to the muscles inserted into it. The articular head is reniform. The shaft is cylindrical:. Stuk-ton ol Ptirmlacliilus cm (.s?/-(^\ A. Restonition of Pterod:icty!e. CLXXX. the walls thin and comp
. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. 170 ANATOMY OF VERTEBRATES. 53, is more expanded at its proximal end than in the Crocodile or Lizard; the inner (ulnar) tuberosity is more prominent, the radial crest much more developed: with a base coextensive with one fifth of the shaft of the bone, it extends in a greater proportion from the shaft, affording a powerfid lever to the muscles inserted into it. The articular head is reniform. The shaft is cylindrical:. Stuk-ton ol Ptirmlacliilus cm (.s?/-(^\ A. Restonition of Pterod:icty!e. CLXXX. the walls thin and compact, the cavity large, and was filled with air as in birds of flight.' The ' pneumatic foramen,' or that by which the air passed from a contiguous air-cell into the bone, is situated on the fore (palmar) side, a little below the radial end of the head of the bone. The radius, ib. 54, and ulna, ib. 55, are very long, straight, and closely connected together. The digits show the lacertian number of > CXLix. p. 16. iLXTi. p. 451. This tliscovei-y breaks down the following distinction : ' Au ruslc, on distingue tonjours riinmoi us d'un Kzaid do celui d'uii oiscau, le premier n'est pas crcnx ni perco dc trous pour rentrce de I'air dans son interieur.' CLi. v. pt. 2, p. 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 Owen, Richard, 1804-1892; Cornell University. College of Veterinary Medicine. Flower-Sprecher Veterinary Library. fmo. London, Longmans, Green
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