Like the sarcoptic, follicular mange is transferable from one dog to another, though less readily than the former. Bare patches should be shaved all around, and the part painted with colourless tincture of iodine daily, or twice daily. The most satisfactory way of dealing with this complaint is to consult a qualified veterinary surgeon. CHAPTER XX =Diseases of the Gullet, Stomach, Bowels, and Digestive Glands= DISEASE OF GULLET--INFLAMMATION OF STOMACH--TWIST AND INTUSSUSCEPTION OF THE BOWELS--INFLAMMATION OF THE BOWELS--VOMITING--WORMS--DIARRHŒA--DYSENTERY--HÆMORRHAGE--HÆMORRHOIDS --DYSPEPSIA--JAUNDICEOR YELLOW--RUPTURES. GULLET This begins at the back part of the mouth, the entrance into it is known as the pharynx, and ends at the stomach. Stricture, or narrowing of the gullet, and injury to it, such as sometimes produced by the dog swallowing a sharp-pointed body, is not an uncommon accident. External compression, such as the presence of a morbid growth in juxtaposition to the gullet, is capable of interfering with the functional use of the tube, thereby preventing the animal from swallowing properly. Diseases of the gullet always demand the exercise of professional skill, and until this is obtained, nothing beyond trifling amounts of liquid nourishment ought to be given. INFLAMMATION OF THE STOMACH (GASTRITIS) Probably the most frequent cause of gastric inflammation in the dog is that arising through the ingestion of irritant poisons, such as arsenic, antimony, etc. Less frequently an inflamed stomach is due to the presence of worms, or to the specific poison of distemper: in the latter case the areas of disease generally being of an extensive nature. The chief symptoms of stomach inflammation are vomiting; pain in the belly; prostration; thirst, and other signs of the dog being in a critical condition. Treatment must be in accordance with the cause. TWIST OR STRANGULATION; AND INTUSSUSCEPTION OF THE BOWELS Neither of these morbid conditions are of uncommon occurrence amongst dogs, more especially so in young dogs, but why this should be so, is difficult of explanation. A twisted bowel is certainly not so frequently met with as a telescoped or intussuscepted one. In both cases inflammation is set up, chiefly confined to the area involved, or in those parts in juxtaposition to the lesion. Practically speaking, one issue is the rule in both cases, and that is death. Spontaneous reduction is rare, and as the diagnosis is attended with difficulty, relief by operation seldom attempted. The true nature of these bowel complaints is generally only revealed on after-death examination. INFLAMMATION OF THE BOWELS We have already alluded to this in the previous paragraph, but inflammation of the bowels also arises from other than the causes therein named. In the author's opinion, the most frequent causes of this complaint in puppies are round-worms (_Ascaris marginata_).