Alfred Henry Garrod
Published: 2013-09
Total Pages: 198
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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. 1881 edition. Excerpt: ...the other running forwards and upwards." In the subgenus Petrogale the stomach is not bifid at its cardiac extremity, in which respect it resembles Dorcopsis. In other respects, however, it presents considerable differences; it is more capacious opposite the oesophageal orifice, and the cardiac portion is bent on the rest nearly at right angles, which is not the case in Macropus giganteus and Dorcopsis. The character of the mucous membrane also deserves attention. In Macropus giganteus, as is well known, the squamous epithelium of the oesophagus spreads over most of the stomach also, the pyloric extremity, and one of the two cardiac caeca (which is itself bifid) being alone lined with a columnar coating. In Petrogale this latter is absent, the digestive mucous membrane being confined to the pyloric region. Of Dendrolagus inustus Prof. Owen remarks, t "the epithelium is continued from the oesophagus, for a breadth of 2 inches down the posterior surface of the stomach, and of 1 inches down the anterior surface, and thence is continued, slightly diminished in breadth, 3 inches towards the pyloric end of the stomach, and 2 inches towards the cardiac end. The rest of the cavity is lined with the usual gastric vascular membrane, the surface of which is diversified by patches of follicular apertures along the upper curvature of the stomach, which patches increase in breadth as they approach the true digestive portion." A very similar condition maintains in Dorcopsis luctuosa, the only difference being that the squamous lining covering the whole of the cardiac cul-de-sac is also found to spread from the oesophageal orifice along the lesser curvature for a short distance towards the pylorus. As in Dendrolagus inustus, two...