50 
Trypanosomiasis of Camels 
1st period during 4 
2nd „ „ 5 
3rd „ „ 6 
4th „ „ 4 
5th „ „ 2 
6th „ „ 4 
7th „ „ 1 
days (18-22nd day) 
j) (31—35th ,, ) 
„ (41—46th „ ) 
„ (57-60th „ ) 
„ (67—68th „ ) 
„ (73—76th „ ) 
» (BOth % „ ) 
The numbers varied from -f v.f. to + + . 
Their appearance in the blood was always accompanied by a rise in 
temperature. 
During the disease the blood was virulent for laboratory animals. Thus, 
besides the above mentioned animals infected on the 9th, 12th and 17th 
days after inoculation of the virus into the foal, the following were infected: 
(1) On the 33rd day: mouse No. 63 (subcutaneously, trypanosomes 
appeared in the blood after 3 days), and rabbit No. 4 (intraperitoneally; 
trypanosomes appeared in the blood after 4 days). 
(2) On the 43rd day: rabbit No. 5 (intraperitoneally; trypanosomes 
appeared in the blood after 14 days). 
(3) On the 57th day: guinea-pig No. 92 (trypanosomes appeared in the 
blood after 8 days). 
(4) On the 70th day: rat No. 1 (trypanosomes appeared in the blood after 
5 days). 
The external phenomena of the disease in the foal were expressed in an 
icteric coloration of the conjunctiva and lip and spotty petechiae on the 
conjunctiva of brief duration, a suppurative discharge from the eyes and 
reddening of the eyelids. 
During the second half of the disease (from the 47th day) the foal began 
to lie down sometimes; in the last third it remained lying down most of the 
time; and from the 66th day onwards it could hardly stand on its legs. 
No oedemata were observed during the infection, but 6 days before death 
there was a swelling of the heel articulation of the right hind leg. Toward the 
end the appetite was greatly reduced and the animal was apathetic. It 
succumbed 82 days after infection. 
The data concerning the investigation of the blood are given on p. 52. 
(i) Large cattle. On the 23rd September, 1914, a young bull was inocu¬ 
lated subcutaneously with the blood of guinea-pig No. 81. 
Trypanosomes appeared in the blood for the first time after 18 days, but 
mice inoculated with the bull’s blood after 14 and 17 days respectively 
contracted the infection. 
After the appearance of the parasites in the blood, they were visible for 
4 days, but disappeared afterwards and were no longer seen. 
However a mouse inoculated with the bull’s blood 48 days after the in- 
