52 
Trypanosomiasis of Camels 
The fowl was again infected from the mouse inoculated with the blood of 
the goose on the 13 November, but did not contract infection: a mouse 
inoculated from it after 7 days did not become infected. 
(c) Duck. On the 13 November a duck was inoculated intravenously 
with the blood of an infected mouse. 
No trypanosomes were observed in the blood. Two mice inoculated 
intraperitoneally with its blood after 7 and 15 days did not contract infection 
(examination conducted during 21 and 18 days). 
( d ) Pigeon. On the 16 October, 1914, inoculated intravenously with the 
blood of an infected mouse. 
During 26 days no trypanosomes were observed in the blood. Two mice 
inoculated with its blood—one after 6 days (subcutaneously) and the other 
after 16 days (intraperitoneally)—did not contract infection (examination 
conducted during 34 and 32 days). 
26 days after the first infection the pigeon was reinoculated in the pectoral 
muscle, with a large quantity of trypanosomes. On the succeeding days 
there were no trypanosomes in the blood, and a mouse inoculated with the 
blood of the bird 7 days after the second and 33 days after the first, inocula¬ 
tion did not become infected. 
Thus, of the four birds on which we experimented, only the goose proved 
to be susceptible to infection. 
IX. ALTERATIONS IN THE BLOOD OF THE HORSE 1 . 
A foal was inoculated subcutaneously with the Bokhara strain of 
trypanosomiasis on 18. ix. 14. The animal remained infected for 81 days and 
during this period the following were examined: 
(1) Red blood corpuscles. 
(2) Haemoglobin. 
(3) White blood corpuscles. 
(4) Leucocytic formula. 
(5) Arneth’s Index. 
(6) Alkalinity of the blood. 
(1) Red blood corpuscles. Previous to infection the number of red cor¬ 
puscles was 8,520,000 per cub. mm. Subsequent counts showed a marked 
diminution in the number of these elements during the course of the infection. 
On the 13th day they numbered 7,136,000 per cub. mm 
„ 17th 
a 
7,120,000 
„ 30th 
» 
4,960,000 
„ 35th 
93 
4,256,000 
„ 43rd 
55 
4,056,000 
1 By W. L. Yakimoff and W. T. Wasilevsky. 
55 
