Hereditary Diseases of Cattle. 
79 
even years. In others, however, great pain is experienced, tlie 
joints are rendered immoveable by large indurated swellings, and 
caries of the bones occasionally supervenes. 
Cattle subject to rheumatism arc also liable to be affected by 
bustioa foul, a dcep-seatod inflammation of the foot and con- 
tiguous parts, resulting not from local causes, but from those 
affecting the svstem at large, usually attacking only one foot, 
attended by a great amount of pain and swelling, leading to the 
formation of sinuses involving the synovial bursze ; very tardy in 
the formation of abscess, usually accompanied by a great amount 
of constitutional fever of the typhoid type, and terminating, in bad 
cases, in caries of the bones and sloughing of the bursa?, liga- 
ments, and sometimes of the hoofs. 
In some districts the scrofulous diathesis is very prevalent and 
fatal. It sometimes shows itself even in the unborn calf, occa- 
sionally causing death of tlie foetus or abortion. In such cases 
the lungs of the calf are generally studded with tubercles, and 
purulent matter is found in the cervical and mesenteric glands, 
in the larger joints, or underneath the muscles of the loins. 
Calves inheriting a scrofulous diathesis are generally small and 
weakly, and, although well nourished and housed, are continually 
ailing. They are troubled with indigestion and acidity of the 
stomach ; their appetites are capricious, their skins scurfy, their 
legs rickety, and their joints swelled, and death generally results 
from imperfect alimentation and the debilitating effects of irri- 
tative fever. Hydrocephalus is also another indication of the 
scrofulous habit occasionally met with in calves, and more fre- 
quent in them than in colts. With good and nutritious food, 
especially of an oleaginous nature, and due attention to regimen, 
this morbid tendency may for a time be subdued : it can never, 
however, be entirely removed, and animals which when young 
have evinced symptoms of scrofula, generally become in later life 
the victims of pulmonary consumption. 
Consumption in cattle, as has been already remarked, has a 
gi'eat analogy to glanders and farcy in the horse. Both occur in 
subjects of depraved or debilitated constitution, often form tlie 
sequaelae of similar diseases, are developed or aggravated by the 
same depressing causes, and diminished in severity by the same 
tonic and invigorating treatment ; both lead to disintegration of 
parts whose integrity is essential to life, and both sooner or later 
terminate fatally by exhausting the vital powers. 
The usual symptoms of pulmonary consumption in cattle are 
so familiar as scarcely to require notice here. As is the case in 
many chronic affections of cattle, the first invasion of the disease 
is generally unobserved, and always difficult of detection. Soon 
however the animal loses condition, and has a general unthriving 
