TEXAS FEVER. 
105 
season the steer was fed a while, and was shipped in fair condi¬ 
tion, on December 28th, to the Texas Experiment Station, 
where he has been exposed since January 1, 1899, without 
showing any signs of fever. 
The two Holstein heifers, Nos. 13 and 14, about 10 months 
old, were infested August 13th, 1898, with 300 ticks each, and 
later they became grossly infested from the pasture. The first 
infestation was made during the warmest part of the summer. 
The heifers showed high evening temperatures through the 
hot weather. Heifer No. 14 suffered more severely, and in Oc¬ 
tober developed an acute case of the fever, dying October 8th, 
56 days after the first infestation. The post-mortem showed 
the usual lesions of Texas fever, such as bloody urine in the 
bladder, softened spleen, yellow liver, and bloodless condition 
of the flesh. This heifer was also found to be affected with 
“ Hoose.” The small bronchi were badly infested with the 
parasitic worms of this disease, and pneumonic areas were 
found in the lungs. 
The long time that elapsed between the first infestation and 
the death of this animal, makes it probable that she would have 
lived if she had not been subjected too soon to the gross tick 
infestation that occurred on the pasture, and had not been suf¬ 
fering from another disease. 
The Holstein that survived (No. 13) was also affected with 
lung worms, and did poorly through the winter, but improved 
when put on pasture in the spring. She was in fine condition 
June 21, 1899, when she was reinfested with several hundred 
ticks. Later she became well infested from the pasture. In 
addition to the tick infestation, this heifer was inoculated June 
15th with 6.5 c.c. infected blood from a Texan cow, and again 
on August 4th with 8 c.c. This severe test caused no fever. 
The heifer has been in the best of health and condition through¬ 
out the season. 
TICK-INFESTATION OF YOUNG CAUVES. 
Calf No. 6, 2 months old, was purposely infested (July 28, 
1897) with a very large number of ticks, to test the effect of 
