26 
W. H. HARBAUGH. 
farms was one of the lines of investigation I pursued during 
the past season. Some animals developed the disease after a 
few weeks’ exposure, and other susceptible animals showed 
no signs of sickness although well infested with ticks, while 
other animals that had been on the places one, two or three 
years, and escaped the disease in former years when cattle on 
the same pasture had died with it, developed the disease and 
died this year. 
During the past season I met with cows affected with the 
disease on which I could discover no ticks, and upon inquiry 
the owners and attendants informed me that they had seen 
no ticks on any of their cattle. I have visited such places a 
month or six weeks afterwards and found ticks on all the 
cattle, susceptible and non-susceptible, but found no Texas 
fever. 
Since I have had experience in hatching young ticks I 
will not say that a cow has no ticks on her; I can only say 
that after a diligent search I did not discover any; as the 
young ticks just hatched have the appearance of small specks 
of dirt, it is impossible to recognize them on a cow till they 
become large enough to be distinguished. 
As the tick is the carrier of the cause from the places per¬ 
manently infected, it must be admitted that the disease is one 
that may be invariably prevented in non-infected places if 
sufficient precautions are taken to free the cattle from ticks. 
Lice, mange and seat insects are destroyed on animals, and 
there is no reason why ticks cannot be kept off animals. 
If the disease depended solely on the presence of ticks 
there would be no such thing as a permanently infected place 
in this region. A severe winter may free a farm of all ticks. 
During the early part of the fever season there were but 
few cases of the disease in Richmond, and it was noticed that 
ticks were hard to find, but during the latter part of the sea¬ 
son the fever prevailed to a great extent, but the ticks were 
still noticed to be less than in former years. Last winter was 
an exceedingly severe one for this section, and hence the 
scarcity of ticks. 
During next season, among other efforts to determine the 
