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extreme temperatures at this hour shown by the three
camels were as follows :—

I have noted temperatures of below 98° F. in the winter
at 6 to 7 P.M. ; these were in camels not proved to be
Surra free.

When for clinical purposes the camel's temperature is
" taken, " the hour in which the observation is made must
be noted, and then the thermometer is of great value
for practical purposes with the camel. In fever, the evening
temperature is of much greater value for diagnosis than the
morning one ; for in low fever the morning temperature is
very often only 98 and 99° F. which is not always abnormal ;
whereas the evening temperature rises over 102° F. and is
then abnormal.

Under ordinary circumstances a resting camel which
shows a temperature of more than 99.5° F. before 10 A.M., or
of more than 102.0° F. between 6 and 7 p.m., is in fever.

The highest abnormal temperature that I have a
record of so far is 107.3° F., observed by Cleland in a case of
Surra; as a rule, Surra paroxysms run between 102 and
106° F. in the evening.

In the morning, 102° F. is high fever.

Camels with Surra even in the intervals between the
" paroxysms" and with trypanosomes temporarily absent
from the blood often show a temperature of over 102° F.
between 6 and 7 P.M., and I always regard a camel which
does this with suspicion even when trypanosomes are not
found on the day. Cases of filariasis when the embryos
are in sufficient numbers in the blood to exercise a debil
itating effect on the camel will also sometimes cause this
slightly abnormal temperature, without other signs of
fever.

Weather has a decided influence on the camel's temper-
ature, more particularly if it is a sudden change from hot

* This was in the hot weather, but I have reason to think that it does not represent
the minimum evening temperature of camels in the cold weather.