. Text book of zoology. Zoology. Glass 6. Mammalia. Order 5. TJngulata. 507 ancliylosed only in the Camels, elsewhere separate. The stomach is constricted into several portions, and after the food has been there for some time, it is regurgitated and masticated anew. There is usually a number of cotyledons ; but in Camels, the placenta is diffuse like that of the Pigs and the Perissodactyles. The mammae are abdominal. In the majority of Ruminants (Cavicornia, Stags, GirafEes), the stomach is divided into three sharply-defined portions. The first compartment follows the oesophagus, and from the
. Text book of zoology. Zoology. Glass 6. Mammalia. Order 5. TJngulata. 507 ancliylosed only in the Camels, elsewhere separate. The stomach is constricted into several portions, and after the food has been there for some time, it is regurgitated and masticated anew. There is usually a number of cotyledons ; but in Camels, the placenta is diffuse like that of the Pigs and the Perissodactyles. The mammae are abdominal. In the majority of Ruminants (Cavicornia, Stags, GirafEes), the stomach is divided into three sharply-defined portions. The first compartment follows the oesophagus, and from the junction a deep groove runs along the anterior side of the chamber, to its opening into the second region, the many- plies (psalterium or omasum) The first part, which attains a consider- able size, is furnished with several ingrowths, one of which is very- large, and divides the cavity into two pletely separated sub- sections, the large paunch {rwmen), and the smaller honey- comb bag {reticulum); the latter is furnished internally with a pro- jecting network of folds; the former with viUi. The manyplies is furnished within with numerous large longi- tudinal laminae, which He closely together and fill up the greater part of the cavity. The last portion, the reed (abomasum) is almost tubular. The rumen, reticulum, and manyplies are Uned by a stratified epithelium like that of the oesophagus and the buccal cavity, and are non-glandtilar; the abomasum is lined with a cylindrical epithelium, and is furnished with glands. The food, which is not much masticated in the mouth, forms a large bolus, passes through the oesophagus, dilating it as it goes, and reaches the rumen, where it undergoes a kind of fermentation or maceration, until it is again brought up in small quantities into the mouth, to be masticated and mixed with saliva. Then it passes a second time, but in a viscid condition, thi'ough the ossophagus, running, however, along the groove of the rumen, and so reaches t
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