G. H. F. Nutt all and S. Hadwen 
251 
Some Haematocrit readings in untreated and treated Cows. 
The protocols include some examinations of the blood by means of 
the haematocrit. The observations, whilst suggestive, are too few in 
number to permit of any definite conclusions. We regret that time did 
not permit of our making systematic examinations of the blood by 
means of the haematocrit, haemocytometer, etc. Such observations 
should be made in conjunction with future experiments of this character. 
The haematocrit readings, made only twice for each cow, gave the 
following figures, which appear to speak in favour of the treatment, 
since only rises are recorded in the °/ 0 of r.b.c. in the treated animals, 
whereas in two out of three control animals the °/o of r.b.c. appears 
to fall. 
Control Cow No. 
Days after inocula¬ 
tion when blood 
was examined 
Percentage 
r.b.c. on 
the two days 
Indicating 
II 
12, 17 
102, 90 
A fall. 
III 
11, 15 
58, 56 
A slight fall. 
IV 
11, 15 
18, 29 
A rise. 
Treated Cow No. 
1 
11, 16 
100, 116 
A rise. 
2 
11, 16 
72, 84 
J J 
3 
11, 15 
32, 37 
A slight rise. 
4 
11, 16 
68, 71 
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