=The prognosis= is even graver than in cases of invagination. Intestinal hernia progresses very rapidly, necrosis soon sets in, and is followed by fatal consequences if the condition be not relieved. =The treatment= is exclusively surgical. As a general rule, whenever colic is recognised as resulting from strangulated hernia, it is immediately necessary to perform laparotomy in the right flank, and after having discovered the cause of strangulation, to divide the mesentery, epiploon, serous fold supporting the testicular cord, or accidental fibrous bands, so as to free the herniated loop and avoid necrosis. If necrosis already exist, the intestine may be resected, exactly as in invagination. DISEASES OF THE STOMACH. In ruminants diseases of the gastric compartments are numerous, and, although they have been recognised since the earliest times, much remains to be discovered concerning at least some of them. This fact results from the imperfect state of our knowledge concerning the essential phenomena of gastric digestion in ruminants. Digestion really consists of a number of different acts—some mechanical or neuro-motor, some chemical; in addition to which must be reckoned the phenomena of sensation, concerning which patients cannot give any information. The mechanical phenomena, consisting in the constant movement of ingested material through the different compartments, rumination, eructation, evacuation towards the intestine, etc., are well known to us; and a careful examination of diseased animals enables us to estimate the importance of changes in them. On the other hand, the chemical phenomena are little understood. It has hitherto been considered that the rumen, reticulum, and omasum are only simple diverticula, with mechanical functions, and that the abomasum is the reservoir in which the chemical changes take place. Another view, which is perhaps not altogether justified, presupposes that the chemical transformation of the food in the abomasum takes place as in other animals, and in particular as in man, in whom the chemistry of gastric digestion has been the object of extremely careful research by certain French and other pathologists. We do not believe (for reasons too long to be explained here) that the gastric digestion of ruminants, or even of herbivora in general, can be identified with that of omnivora. The nature of the food being totally different, the chemical reactions in the stomach and intestines are also different; in proof of which we need only cite the single fact that ptyalin is absent from the saliva. Straw and oats are not digested in the same way as a mutton cutlet.