Report of the Annual Meeting Volume 9

Report of the Annual Meeting Volume 9

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1840 edition. Excerpt: ...a single surface for the articulation of the rib: the spinous processes are thicker, shorter, and more rounded superiorly, than in the Ich. intermedius or Ich. communis: their articular processes for mutual interlocking are well developed, especially at the anterior part of the spine. The ribs commence, as usual, at the second cervical vertebra; they increase in length to the twenty-fifth, and thence diminish, at first gradually, but after the fortieth more suddenly. The forty-fourth pair is straight, and they are continued, gradually diminishing in length, attached by a simple head to the rudimental transverse process on each side of the body of the vertebra, as far as the 100th vertebra, counting from the atlas. Pectoral E.z'tremit_1/.---The scapula""' is a strong bone, with the upper or dorsal extremity truncated and slightly expanded, the anterior margin nearly straight, but slightly produced at its distal end; the posterior margin is slightly convex in the middle, moderately concave above, and very concave below; the inferior extremity is expanded to receive the articular ends of the coracoid bone and humerus; the posterior part of this articular extremity is the thickest part of the bone. The coracoid has a more extended scapulo-humeral surface, ---the scapular portion being the shortest, and has a narrower and deeper upper notch, than in the other species of Ichthyosanri. The internal surface of this bone is flat, but slightly concave below; the ento-sternal margin is thickened, the external surface is slightly convex. In Lord Cole's collection there is the coracoid of an Ichthyosaurus plat;/odon from Lyme, of which The following are the words in which two great comparative anatomists have recorded their...show more

Product details

  • Paperback | 166 pages
  • 189 x 246 x 9mm | 308g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236750918
  • 9781236750914