i8 
Journal of Agricultural Research 
Vol. XXI, No. x 
The curve shows, in general, a gradual rise till 6.15 p. m., the time the 
cow lay down, followed by a slight and gradual drop. 
OBSERVATIONS ON DECEMBER 14, 1919, WITH COW 886 
Observations on the rectal temperature were made at approximately 
15-minute intervals from 5.06 p. m. to 6.21 p. m. From 5 p. m. to 5.36 
p. m. the cow was eating. From 5.50 p. 111. to 6.21 p. m. she was lying. 
The results are represented by figure 19. 
OBSERVATIONS ON JANUARY 12, 1920, WITH COW 886 
Readings of the rectal temperature were taken at 15-minutc intervals 
from 5 p. m. to 6 p. m. The cow was eating from 5 p. 111. to 6. p. m. The 
results are given in figure 20. 
The curve shows, in general, a gradual rise from 5 p. m. to 6 p. 111. It 
should be mentioned that the cow received a supermaintenance ration at 
this date and that she spent the whole hour from 5 p. m. to 6 p. m. in 
eating. 
OBSERVATIONS ON DECEMBER II, 1919, WITH COW 885 
Readings of the rectal and vaginal temperatures were taken at approx¬ 
imately 15-minute intervals from 5 p. m. to 6. 30 p. m. From 5 p. 111. to 
5.42 p. m. the cow was eating. The reading at 5 p. m. was taken immedi¬ 
ately after defecation. At 6.15 p. m. the cow defecated and pushed out 
the thermometer. The readings taken then and also immediately after 
defecation corresponded with each other. The cow was standing all the 
time. The results are given in figure 21. 
The rectal curve shows a gradual rise in temperature till 5.42 p. m., 
the time the cow was through eating, followed by a slight fall in tempera¬ 
ture till 6.15 p. m., followed again by a rise. The vaginal curve is much 
lower than the rectal. 
OBSERVATIONS ON DECEMBER 13, 1919, WITH COW 885 
Readings of the rectal temperature were taken at approximately 15- 
minute intervals from 5.12 p. m. to 7 p. m. From 5 p. m. to 5.35 p. m. 
the cow was eating. From 6.35 p. m. to 7 p. m. she was lying. The 
results are represented by figure 22. 
The curve is, in a general way, similar to the rectal curve in figure 21. 
OBSERVATIONS ON DECEMBER 14, 1919, WITH COW 885 
Observations on the rectal temperature were made at approximately 
15-minute intervals from 5.18 p. m. to 6.12 p. m. From 5 p. m. to 5.35 
p. m. the cow was eating. The cow was up all the time. The results 
are given in figure 23. 
The peculiar feature of this curve is the rather rapid drop from 5.30 
p. m. to 6.12 p. m. 
