DISEASES OF THE MUCOUS BURSA 245;- 



the bony origin or insertion of such a muscle. It seems that 

 the connective tissue constituents of a muscle whicli are near 

 hony insertion, and where the osseous changes are mainljr 

 observed during their original development, are endowed 

 with periosteal-like properties, as the bony process is identical 

 with bony formation, such as is seen to come from the peri- 

 osteum. 



In which animals has ossifying myositis been observed ? 

 Horses, dogs and swine. 



What is the treatment ? 



None ; the disease is incurable. 



MUSCULAR EHEUMATISM. 



What is muscular rheumatism, ? 



An acute serous myositis at first, with a strong tendency^ 

 toward chronicity, in which case it leads to a chronic inter- 

 stitial muscular infl.ammation. 



What is the cause of rheumatic myositis ? 

 . Mainly exposure to cold and damp. 



What changes take place in the affected tissues ? 



In acute muscular rheumatism the changes peculiar to- 

 serous myositis, while in the chronic form those accompanying^ 

 interstitial myositis are seen. 



What animals are mainly subject to rhev/matic myositis ? 

 Dogs, cattle and horses. 



What muscles are more frequently involved ? 



The mostoido humeralis, the cervical and lumbar and:- 

 gluteal muscles and intercostal muscles. 



