126 NEW YORK ZOOLOGICAL SOCIETY. 
ray fungus disease in cattle, nearly twenty-five per cent. of the 
animals showed no characteristic enlargement of the bones of the 
head or jaw at any stage of the malady, the lesions being of a 
purely internal nature. 
The symptoms most frequently reported, and for which isola- 
tion was enforced, were usually first an uneasy movement of the 
jaws, with disinclination (evidently due to disability) to partake 
of food in the normal manner, especially grains; second, volun- 
tary isolation from the herd; third, weakness. 
Upon closer examination about three-fourths of these cases 
revealed either enlargement already present, or at least soreness 
of the bones about the head, soon to be followed by the char- 
acteristic enlargement and suppuration of the jaws and facial 
region. Some of them presented the symptoms of a very tena- 
cious discharge from the bowels containing much pure mucus, 
indicative of early digestive disturbances. 
Treatment by the local and general use of iodine and the 
iodides, so singularly useful in the treatment of this disease in 
both cattle and man, while it did certainly appear to prolong 
life, failed to bring about any cures. 
Both from the clinical and pathological point of view this 
disease as here manifest in this certain species of mammal con- 
forms quite closely in its aspects to the disease as attacking man- 
kind, especially since there is abundant evidence to indicate that 
primary invasion was through parts other than the mouth, and 
of metastatic nature, both of which are certainly quite exceptional 
as we know the disease in cattle, both at range and in the 
abattoir. 
Since actinomycosis is seldom contracted by animals living 
entirely upon succulent vegetation we found it difficult during this 
outbreak to meet the requirements of the case by grazing the 
animals, as ample experience had proven that the prong-horn 
enjoys good health in this vicinity only so long as kept in stone- 
bottomed paddocks and receiving perfectly dry food; hence of 
the two alternatives of either jeopardizing the entire herd by 
turning them upon grass ranges, or by segregating as far as 
possible the infected animals upon dry rations, we chose the 
latter, using at intervals crude carbolic acid in dilution to drench 
the paddocks and sterilize their lodge, and since no new cases 
have appeared during the past four months I trust we may soon 
consider the danger of this somewhat remarkable scourge at 
an end. 
