J 6 4 
subcutaneous tissues of the face, there were no symptoms, until the 
forty-seventh day, when it was noticed that the animal was very 
weak. The next day it was down and unable to rise. Death 
occurred on the fifty-fourth day. 
Table ii. — Donkcvs and Horse infected with the Rhodesian strain 
Description of 
animal 
Amount of virus 
injected subcutaneously 
or intraperitoneally 
Day on 
which 
parasites 
were first 
seen in 
blood 
Day on 
which 
death 
occurred 
Remark 
I. Donkey y 
Weight, 164 lbs. 
Subcutaneously, i c.c. of 
diluted blood solution 
containing 10,000 try¬ 
panosomes per c.mm. 
5th day 
54th day 
Parasites constancy 
present, but. as a nik 
scanty, except on las 
three days, when the? 
were fairly numeral 
(10 to 20 to a field 
Posterior nuclear for® 
found. 
Weight a week Mo¬ 
des th. 290 lbs. 
2. Donkey j 
Weight, 324 lbs. 
Subcutaneously. 1 c.c. of 
diluted blood solution 
containing 1000 try¬ 
panosomes per c.mm. 
7 tl> „ 
28th „ 
Parasites constant!? 
present in small nil® 
bers. No posted* 
nuclear forms found 
Weight five days Mon 
death, 280 lbs. 
3 - P«ny 3 
Weight, 644 lbs. 
Subcutaneously. 1 c.c. of 
diluted blood solution 
containing 10,000 try¬ 
panosomes per c.mm. 
7 th „ 
38th „ 
Parasites constant!' 
present, but only » 
small numbers uatfl 
within a few dan 
death, when 3 to 5 »* 
field were found. ' 
few posterior nucha' 
forms were seen. 
Weight three days Mo" 
death. 548 lbs. 
onkey 2. Inoculated subcutaneously. Incubation period 
hi C | a ^ S ’ ^ aras ^ es were subsequently constantly present in the 
00 in small numbers. No posterior nuclear forms were seen, 
emperature 103-104° F. The only signs of disease were 
progressive wasting and debility. Death took place on the 
twenty-eighth day. 
p, ^ Horse inoculated subcutaneously with a small dose of the 
i° esian strain exhibited parasites in its blood on the seventh 
>’• rypanosomes were subsequently regularly found, there 
