330 CLINICAL VETERINARY MEDICINE AND SURGERY. 



made rapid progress, as shown by ^vasting, loss of appetite, and pale- 

 ness of the mucovis membrane. Death occurred on the 23rd June. 



Post-mortem Examination. — General wasting. No growths in the 

 viscera. The head having been sawn through along the middle line, 

 the left branch of the low^er maxilla opposite the first molars appeared 

 destroyed throughout its entire depth. Around this area of destruction 

 the branch of the maxilla was swollen, enlarged, its two layers thrust 

 widely apart, and its tissue softened. The first and third molars had 

 fallen from their alveoli ; the second, surrounded by granulating tissue, 

 was quite loose. The tumour in the intermaxillary space weighed 

 4 lbs. 6 oz. The buccal and facial portions of the other new growth, 

 which occupied the entire depth of the maxilla and extended beyond 

 its margins, w^eighed nearly 6 lbs. 6 oz. 



This case is remarkable for the rapidity with which the cancer 

 developed. In two months it destroyed the central portion of the 

 right branch of the lower maxilla, produced great disturbance, and 

 caused troubles ending in general decline and death. 



DENTAL CARIES. 



2,^. Five-year-old mare affected with caries of the second left 

 upper molar. Entered hospital on the loth November, 1896. 



For some time this animal had been noticed to eat very slowly. 

 It masticated oats badly, ate hay with difficulty, and seemed to prefer 

 mashes and easily masticated food. It had also been observed that 

 considerable quantities of fcetid saliva mixed with food material ran 

 from the mouth, and that the left side of the face exhibited a swelling, 

 painful on pressure. 



Condition on Entry. — The left side of the face in front of the small 

 maxillary sinus exhibited a diffuse, slightly painful sw^elling. Large 

 quantities of viscous stinking saliva, mixed with food material, ran 

 from the mouth. A greenish muco-purulent discharge escaped from 

 both nostrils, but especially from the left. The submaxillary gland 

 appeared as a small, hard, indolent swelling, not adherent to the base 

 of the tongue. The mouth was offensive. Opposite the second molar 

 was a depression in the line of teeth, around which food had accumu- 

 lated. The gum and inner surface of the cheek were inflamed. 



At exercise the animal produced a peculiar abnormal sound during 

 respiration, pointing to deformity of the left nasal cavity, a condition 

 verified by exploration with Gunther's catheter. 



Diagnosis. — Caries of the second left molar, with swelling of the 

 floor of the corresponding nasal cavity. 



Treatment. — Removal of the tooth by punching. On the nth 

 November the mare was cast on the right side, and the jaws having 

 been widely opened by a gag, a V-shaped incision was made over the 

 root of the tooth, the subjacent tissues reflected, and the maxilla 

 trephined, giving exit to a quantity of grumous fcetid pus mixed with 

 food. 



After cleansing the cavity the punch was applied to the root of the 

 tooth, which was displaced by a few gentle blows, an assistant mean- 



