104 0 F. in any of the animals, but usually fell considerably shortly 
before death. Incubation period, three to five days; average four 
days. Duration, eight to fourteen days; average eleven days. 
Table i. —Monkeys infected with the Rhodesian Strain 
Description of 
animal 
Amount of virus 
injected subcutaneously 
or intrapcritoneally 
Day on 
which 
parasites 
were first 
seen in 
blood 
Day on 
which 
death 
occurred 
Remarks 
i. Macacos rhesus. 
Weight 2210 g. 
Intraperitoneally with 
1 c.c. of diluted blood 
solution containing 
5000 trypanosomes per 
c.mm. 
5th day 
14th day 
Parasites always present in 
large numbers. Many 
posterior nuclear forms 
found. 
Weight at time of death, 
1850 g. 
2. M. rhesus. 
Weight, 1670 g. 
Intraperitoneally. 1 c.c. 
of diluted blood solu¬ 
tion containing 10,000 
trypanosomes per c.mm. 
3 rd „ 
nth „ 
* 
Parasites numerous on the 
sixth and seventh days. 
Posterior nuclear forms 
present. Subsequently 
the number of trypano¬ 
somes diminished. 
Weight at time of death, 
1500 g. 
3. M. rhesus. 
Weight, 5370 g. 
Subcutaneously. 1 c.c. 
of diluted blood solu¬ 
tion containing 500 
trypanosomes per c.mm. 
4th „ 
9th „ 
Parasites present in large 
numbers. Posterior 
nuclear forms found. 
Weight at time of death, 
5000 g. 
4. Cercopitbecus 
callitricbus 
Weight, 2520 g. 
Intrapcritoneally. 1 c.c. 
of diluted blood solu¬ 
tion containing 10,000 
trypanosomes per c.mm. 
4th „ 
10th „ 
Parasites present in con¬ 
siderable numbers from 
the sixth day until 
death. A few posterior 
nuclear forms seen. 
Weight at time of death, 
2100 g. 
5. C. callitricbus. 
Weight, 3160 g. 
Intraperitoneally. 1 c.c. 
of diluted blood solu¬ 
tion containing 5000 
trypanosomes per c.mm. 
4th „ 
8 th „ 
Parasites numerous. Many 
posterior nuclear forms 
found. 
Weight at time of death, 
255 ° g■ 
6. C. ruber. 
Weight, 4150 g. 
Intraperitoneally. 1 c.c. 
of diluted blood solu¬ 
tion containing 500 
trypanosomes per c.mm. 
4th „ 
14th „ 
Parasites fairly numerous 
(10 to a field) on the 
ninth day; otherwise 
scanty. No posterior 
nuclear forms found. 
Weight at time of death, 
3600 g. 
