20 
Journal of Agricultural Research 
Vol. XXI, No. I 
OBSERVATIONS ON JANUARY 4, 1920, WITH COW 885 
Observations on the rectal temperature were made at approximately 
15-minute intervals from 5 p. m. to 5.55 p. m. From 5 p. m. to 5.36 
p. m. the cow was eating. The cow was up all the time. The results 
are represented by figure 24. 
OBSERVATIONS ON JANUARY 4, 1920, WITH COW 886 
Readings of the rectal temperature were made at 15-minute intervals 
from 5 p. m. to 6 p. m. The cow was not fed till 6 p. m. and was standing 
all the time. The results are represented by figure 25. 
The peculiar feature of the curve is the fall in temperature till 5.30 
p. m., followed by a rise from 5.30 p. m. to 6 p. m. 
OBSERVATIONS ON MARCH 20, 1920, "WITH COW 886 
Two readings of the rectal temperature were taken be tween 5 p. m. 
to 6.25 p. m. The cow was not fed till 6.25 p. m. and was standing all the 
time. The results are given in figure 26. 
The curve does not show any material change in temperature from 
5.15 p. m. to 6.25 p. m. 
OBSERVATIONS ON JANUARY 12, 1920, WITH COW 885 
Readings of the rectal temperature were taken at approximately 20- 
minute intervals from 5 p. m. to 6.04 p. m. The cow was not fed till 
6 p. m. and was standing all the time. The results are given in fig¬ 
ure 27. 
OBSERVATIONS ON FEBRUARY l6, 1920, WITH COW 885 
Readings of the rectal temperature were taken at half-hour intervals 
from 5 p. m. to 6 p. m. The cow was not fed till 6 p. m. and was standing 
all the time. The results are given in figure 28. 
The curve shows a fall in temperature from 5 p. m. to 5.30 p. m. 
GENERAL, CONCLUSIONS WITH REGARD TO THE VARIATIONS IN BODY 
TEMPERATURE FROM ABOUT 5 P. M. TO ABOUT 7 P. M. 
A comparison of the temperature curves obtained when the cow was 
fed at 5 p. m. with those obtained when the cow was not fed till 6 p. m. 
shows, in general, that when the cow was fed at 5 p. in. there was a 
slight rise in temperature till about 5.30 p. 111., followed by a slight fall. 
This rise from 5 p. m. till 5.30 p. m. has been noted in previous observa¬ 
tions (fig. 2, 5, 7, 9, 10), when the cows were fed at 5 p. m. When, how¬ 
ever, the cow was not fed till 6 p. m., the temperature in most cases 
not only did not rise from 5 p. m. to 5.30 p. in., but instead dropped 
slightly. This indicates that eating of the feed raises the body tempera¬ 
ture slightly for about hour when the cows receive a maintenance 
ration. 
