OSTEO-SARCOMA. 811 



can often be observed at the distance of several yards from the 

 animal ; pulse full and hard, but not quickened. Although 

 this disease is regarded as incurable, we can still palliate the 

 symptoms so as to allow of the animaPs return to work the 

 next day. 



For treatment, give one of the following powders every three 

 hours ; of nitrate of potassa one ounce ; pulverized digitalis two 

 drachms ; mix, and divide into five powders. Subsequent attacks 

 may be warded ofif by keeping the bowels regular. 



DISEASES OF THE HEAD. 



OSTEO-SARCOMA. 



This disease, called commonly Big Head, is not mentioned 

 by veterinary authors in Europe, and so far as the author can 

 learn, seems to be peculiar to the Western and Southern States. 

 It appears, from the rather unsatisfactory accounts at the 

 author's command, to originate in the osseous, or bony, struc- 

 ture of the face. The bones become much swollen, and are 

 represented as presenting a soft, spongy, or cellular appearance, 

 the cells being filled with a substance like jelly. This appear- 

 ance, however, does not correspond externally with several 

 specimens in the author's possession, in which the external sur- 

 face of the bones appears to be perfect, but very thin, and very 

 much enlarged. 



The symptoms are a swelling of the bones of the face from 

 the eye to the nose ; pufiy swelling about the limbs ; stiffnesa 



