TEXAS FEVER. 
329 
twice a week. A gap occurs in the record, from March 22 to 
April 17th, on account of an accident to the apparatus. All 
of the samples of blood for examination were taken from the 
ears, and at once subjected to a very rapid centrifugal action. 
By comparison with other cattle’s blood we may regard the 
normal percentage of red blood corpuscles to be from 35 per 
cent, to 40 per cent. No effects of the inoculation, either local 
or systemic, were noticed until Jan. 14th, eight days after in¬ 
oculation, when the hsematokrit readingsindicated a destruction 
of the blood corpuscles. At the beginning of the experiment 
the average per cent, of red corpuscles in the blood was 38.3, 
On the 8th day of the experiment it had fallen to an average of 
31.3 per cent. The rise in temperature in the several animals 
was very abrupt, rapid and almost simultaneous. It appeared 
on the 9th and 10th days after inoculation. We call this the 
primary fever period. The morning temperatures ranged from 
103.6° the lowest to 105.6° the highest. This continued from 7 
to 9 days and then returned to normal. The destruction of the 
blood corpuscles continued until on the 13th day of the experi¬ 
ment the average was 27.3 per cent. ; on the 15th day it was 
23.3 per cent. By the 19th day (Jan. 25th) the fever had ceased, 
and the blood gained a little, reading an average of 24.5 per cent. 
See graphic record Fig. 12. 
The symptoms of digestive disorder are worthy of mention. 
During the fever we noticed a lack of relish, though they con¬ 
tinued eating. The well ones crowd the sick aside. If the 
sick ones were fed separately, they consumed a reasonable 
amount. We noticed among some calves bloating and a dispo¬ 
sition to eat quantities of dirt. I11 some cases there was diar¬ 
rhoea, and discharging of mucous from the nostrils, muscular 
weakness, trembling, and a desire to lie down for considera¬ 
ble periods. In no case was bloody or red urine noticed. By 
the 18th day the fever of the primary reaction had entirely 
ceased. The lowest average per cent, of blood corpuscles re¬ 
sulting from the primary reaction was 23.1 per cent., which 
occurred on the 15th day. From the 18th to the 29th day the 
