88 
Equine Firoplasmosis 
Eeference to the foregoing chart shows that the parasites appeared with the onset of 
fever on the 7th day following the inoculation. The highest temperatures and highest 
percentages of infected corpuscles (only about 1 ®/„) were both attained on the 10th and 
11 th days, after which the temperature fell gradually to normal and the parasites dwindled 
in numbers. The small number of parasites precluded any enumeration of the relative 
percentages of the different types of parasites present in the blood. This animal made a 
complete recovery, and is alive and well to-day (27 February, 1912). 
Nuttallia eqid Horse III. 
The Horse was inoculated subcutaneously with 20 c.c. of defibrinated blood taken from the jugular 
vein of Horse II at mid-day on 2. viii. 1910. Horse III had previously been infected with Piroplasma 
caballi on 22. vi. 1910, but had recovered (see Protocol of P. cahalli Horse II). N. equi appeared in the 
horse’s blood on the 10th day, and it died at 5.30 p.m. on the 20th day after inoculation (21. \uii. 1910). 
Temp. °F. 
Day 
1 
2 
3 
M. 
97- 8 
98- 2 
98-2 
Inoculated. 
5 
6 
98- 2 
99- 0 
— 
R.b.c. per 
per c.mm. 
Haemo¬ 
globin 
cytes 
per 
c.mm.* 
7 
98-2 
— 
8,888,000 
0-227 
8,640 
8 
98-2 
— 
8,872,000 
0-230 
12,900 
9 
97-4 
— 
8,968,000 
0*222 
7,120 
10 
100-4 
— 
Parasites appeared. 
9,155,000 
0-240 
7,800 
"/o >' b,c, 
infected 
% 
' 
(S) 
(L) 
(D) (2-4) 
F 
10 
102-0 
0-2 
34 
65 
1 
. 
• 
11 
103-0 
3-0 
23 
75 
1 
- 
0-4 
9,004,000 
— 
10,650 
104-2 
2-0 
43 
50 
4 
2 
. 
Horse weak. 
12 
104-2 
Horse weak, jaundice; off 
7,240,000 
0-230 
9,540 
106-6 
11-6 
23 
70 
3 
4 
1 
his food. 
13 
105-0 
10-3 
47 
45 
0-6 
2 
5 
Very weak; haemoglobin- 
5,390,000 
— 
— 
104-6 
6-8 
50 
43 
2 
3 
2 
uria; blood appears watery, 
coagulation retarded. 
14 
103-0 
8-4 
56 
38 
0-2 
4 
1 
Eather better; feedingbetter. 
5,365,000 
0-141 
12,000 
101-7 
10-6 
62 
33 
2 
2 
1 
haemoglobinuria. 
15 
100-6 
5-2 
31 
65 
1 
3 
0-4 
Ditto ; urine smoky. 
4,812,000 
0-104 
7,520 
102-4 
7-4 
28 
66 
0-6 
5 
0-6 
16 
102-4 
9-2 
15 
80 
0-6 
3 
0-2 
Very weak, especially hind 
3,840,000 
0-115 
9,700 
100-8 
6-8 
35 
57 
1 
4 
1 
legs, which are stretched 
apart. 
17 
103-0 
8-0 
19 
75 
1 
3 
0-2 
Seems better, feeding; swell- 
3,848,000 
0-104 
13,500 
103-0 
12-8 
28 
67 
2 
3 
• 
ing on jaw (abscess). 
18 
103-0 
8-6 
25 
69 
1 
4 
0-3 
Weak; jaundice persists. 
3,230,000 
0-100 
22,600 
102-2 
13-2 
20 
73 
2 
5 
. 
19 
103-2 
101-0 
6-6 
4-8 
23 
20 
74 
75 
1 
1 
2 
• 
Very weak, lying down. 
3,120,000 
0-066 
33,600 
4 
• 
Mean of two 
readings, 
being the O 
capacity of 
1 c.c. of 
20 
98-4 
8-4 
29 
53 
2 
11 
6 
Helpless, urine smoky; 
found dead at 5.30 p.m. 
