90 
Equine Piroplasmosis 
Piroplasma caballi Horse I. 
The Horse was inoculated subcutaneously at 3 p.m., 4. vi. 1910, with 15 c.c. of citrated 
blood sent to us by Dr E. J. Marzinowsky, from Moscow. The horse died on the 2*2. vi. 
1910 (day 19). 
Day 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
13 
14 
15 
16 
17 
18 
19 
Temp.°F. 
100- 4 
97-8 
99-1 
97-4 
96- 8 
97*4 
96-2 
97- 0 
97-2 
96- 8 
97- 4 
97*8 
99*8 
101 - 0 
99-6 
100-0 
101- 4 (a, 
102- 4 (p 
Inoculated. 
Abscess forming at seat of inoculation. 
Abscess lanced. 
Parasites appeared, only 2 (PP) found after long search. 
Parasites present, only 3 (PP) found. 
•m.) „ „ few, 66<>/o(0), 34 0/„(PP). 
,m.) 
Horse found dead but still warm at 9 a.m. Died of pulmonary hae¬ 
morrhage. 
There were too few parasites present in this horse’s blood to render a satisfactory 
blood-count possible during life. Of the parasites found on the 18th day, 66 were 
single round parasites (0) and 34 “/o double piriforms (PP). It was possible, however, in 
stained films prepared from the internal organs after death, to make an enumeration of 
the different types of parasites as follows : 
(O) 
(D) 
(PP) 
Free 
Liver 
84 
1 
8 
7 
Spleen 
73 
2 
10 
15 
Lung 
77 
0 
3 
20 
