DISEASES OF THE DIGESTIVE ORGANS. 21 



ing forms on the external part of the tumor, and frequently a similar 

 destructive process forms an opening into the mouth itself. 



In a recent work, in treating of this subject, I have remarked that 

 in some cases it will be observed that these swellings, after growing 

 for a short time, remain in a stationary condition the growth appears 

 to be arrested. Such cases will not require treatment, as the arrest of 

 the growth of the swelling is no doubt caused by the death of the para- 

 site, which ceases to reproduce itself and thenceforth becomes harm- 

 less. The living parasite, by rapidly reproducing itself, extends 

 through the bony tissue, and by setting up inflammation causes a rapid 

 increase of the swelling. The aim of treatment then is to destroy the 

 parasite, thereby arresting the growth of the swelling; and this is all 

 that can be done, where the utmost success practicable is attained. The 

 importance of early treatment will, however, be understood when it is 

 remembered that there is a continued and rapid multiplication of the 

 parasite, and that this multiplication is attended with increasing 

 damage to the tissues of the animal in which it is lodged. 



Treatment. When there is an external opening on the surface of the 

 swelling it should be injected with tincture of iodine. When there is 

 no external opening several incisions should be made through the skin 

 covering the swelling, and portions of the outer plate of the jaw-bone 

 should be removed with a trephine, and tincture of iodine injected into 

 the orifices thus made. This treatment should be applied daily, and 

 may be continued until it is apparent that the growth of the swelling 

 has been checked. The iodine checks the growth of the swelling by 

 destroying the parasite whose continuous development is the means of 

 setting up diseased action in the bone. Other methods have been 

 applied in treating this disease, such as burning the diseased bone with 

 the hot iron, which is said to have proved effectual in checking the 

 progress of the disease. But remedies whose action is diffused exten- 

 sively through the diseased tissues are to be preferred in treating a dis- 

 ease of this nature. 



INFLAMMATION OF MUCOUS MEMBRANE OF MOUTH STOMATITIS. 



The membrane of the mouth may become inflamed by cattle eating 

 sonif irritating substance, by eating acid plants, or little vesicles may 

 form in the mouths of calves when they are affected with indigestion, 

 constituting what is termed aphtha. 



tfymptontH. The saliva dribbles from the mouth, and when it is ex- 

 amined the surface of the tongue and other parts of the mouth will 

 appear red and inflamed. When young animals are affected with the 

 t'onu of disease termed aphtha small red elevations will be observed on 

 the tongue and other parts of the mouth, having little white ]K)ints on 

 their centers, which consist of the epithelium of the mucous membrane 

 r.ii>e<l into vesicles. These white patches aie succeeded by ulcerated 



