33G DISEASES OF THE ORGANS OF LOCOMOTION 



■with an enormous swelling of the inferior maxillary and on minute ex- 

 amination of the bone there was lacunary atrophy. 



Ostitismus Universalis and Hyperostosis et Myostosis Universalis 

 Progressiva. — This is a peculiar affection of young clogs. It is indicatetl 

 ])y numerous nodules of bone at the insertion of many muscles of the body, 

 and great increase in the lime salts of bones and also of weight of the 

 skeleton. It has been observed by Kitt where an animal had an enor- 

 mous swelling of the head the lower jaw and the bones of the legs partic- 

 ularly the bones of the forearm, while the other bones of the body were 

 entirely free from any sign of the disease. The animal suffered no in- 

 convenience from the condition, had no fever, appetite good and general 

 health was excellent. The deformity of the skeleton made walking 

 irregular and difficult, and the animal moved around with a wave like 

 motion of the body. 



Multiple Periostitis. — This condition is extremely rare, there is 

 generally more or less rheumatism and deposits in the articular ends 

 of the bones, probably a complication of gout. 



Neoformations of the Bones. — Osteophytes and exostoses, so often 

 seen in other of the domestic animals, are extremely rare in the dog. 

 Sarcomata (osteo sarcoma), on the other hand, appear in a variety of 

 ways developing from the periosteum or directly from the marrow canal 

 of bones, or in the inferior maxillary causing a tumefaction of the gum. 

 The writer has observed two cases in the radius and ulna, which were 

 illustrated by means of the Rontgen rays (X-rays), the destruction and 

 alteration of the bones could be readih^ distinguished, numerous cases 

 have been observed by other observers. 



