DISEASES OF THE BONES. 



175 



partially removed, while others appeared normal. The cartilage 

 of the hip joint was pale yellow in color. The quantity of syno- 

 via in the joints was small. This same condition exists in rheu- 

 matoid arthritis. Several small growths were found in the joints, 

 some cartilaginous and others bony in their character. This 

 condition is also present in rheumatoid arthritis. 



The bones of the jaw were considerably hypertrophied and of 

 a pink color. The periosteum could be scraped oft" with ease. 

 On pressing upon the bone, blood would ooze from its surface. 

 The bones here were soft. 



Treatment. — The treatment of the cases above mentioned 

 consisted of six drachms of aloes every third or fourth day. 

 Nitrate of potash in one-half-ounce doses should be given in the 

 feed three times a day. Drachm doses of salicylate of soda 

 should be given in the feed, along with the potash, night and 

 morning. Xitrous aether in ounce doses might be added to the 

 first three or four doses. 



The local treatment consists of liniments to the affected parts. 

 The animal should be put to slow work. 



OSTEO SARCOMA. 



This is a non-inflammatory disease of bone, and is defined to 

 be a fibro-plastic degeneration of bone. It is a disease of a 

 malignant character, and is seen often in the finer bred cattle, 

 especially in the duchess strains. 



The cause of this disease has been attributed to external vio- 

 lence in some cases, but I am inclined to believe that all cases ot 

 osteo sarcoma are due to a vegetable parasite. The parasite 

 causing the disease is known by the name actinomyces. Tlie 

 parasite gets into the mucous membrane in connection with the 

 teeth. "Prof. Williams states that he is of the opinion that the 

 causes are intrinsic and due to a scrofulous diathesis." It occura 

 in young animals mostly, and affects steers more than bulls. 



Symptoms. — The disease occurs oftenest in the lower jaw. A 

 small tumor ( r circumscribed swelling occurs in the neighbor- 



