47 1 
Rat 6 ^-T. rhodesiense in White Rat, ( 5 , weight 150 grams, 
inoculated with 500,000 trypanosomes. 
Day. 
I 
2 
3 
4 
5 
6 
7 , 8 
9 
Parasites per c.mm. 
— 
— 
— 
— 
72 
2056 
1 968 6420 
592, killed 
Temp. 
38 
36 
S' 
56 
54 
70 
70 62 
54 
Heart blood, fresh, of Rat 6.—Flagellate parasites seen, only 
three latent bodies found in a fresh preparation. 
Liver .—Flagellates 96, and latent bodies 4; in one hour, 
however, the number of latent bodies in the fresh preparation had 
increased 16 times (namely to 64), and the flagellates were 
correspondingly fewer. 
Lungs . — About equal numbers of trypanosomes and latent 
bodies. 
Spleen . — Many latent bodies, no free flagellates seen. 
Bone marrow .—A few latent bodies, no flagellates seen. 
Rat 7.— T. rhodesiense in Piebald Rat, $, weight 170 grams, 
inoculated with r,000,000 trypanosomes. Weight 182 grams 
at death, but pregnant. 
Day . 
1 
2 
3 
4 
5 
6 
Parasites per c.mm. 
_ 
8 
5852 
27,916 
16,468, killed 
Temp. . 
38 
62 
55 
67 
66 
Heart blood of Rat 7.—Many flagellates, few rounded bodies. 
Liver . — Equal numbers of flagellates and rounded bodies. 
Lungs . — Three times as many latent bodies as flagellates. 
Bone marrow .—Large rounded bodies. 
Spleen . — No flagellates seen, but many rounded bodies. 
Splenic vein blood.—Twice as many flagellates as rounded 
bodies. 
Mesenteric gland fluid . — Many flagellates. 
Lymph .—Rounded bodies and Crithidia-like forms. 
