216 Dr. H. B. Fantham. History of T. gambiense [Oct. 15, 
Heart and liver of Rat 4: many large trypanosomes seen in fresh 
preparations, very few rounded bodies. 
Lungs: a few free flagellates, three times as many rounded forms. 
Spleen: a few small flagellate trypanosomes (3 per cent.); many rounded 
forms. 
Kidney blood: flagellate trypanosomes. 
Bone marrow: rounded bodies. 
Rat 5.—T. rhodesiense in White Rat, 2, weight 247 grammes, inoculated 
with 120,000 trypanosomes. 
1 DUE Pea eae cate if 2 3 | 4 5 | 6 vu | 8 | 9 10 
Parasites, perc. mm.-..| — | — | — |.— 4, 12 | 20 | 296 | 624 | 3744, killed 
Mennpiws.cres cose ene 52 | 88 | 384 | 96 | 86 | 86 | 20 66 
Flagellate trypanosomes seen in all the internal organs of Rat 5. A few 
latent bodies seen in the lungs, spleen, and bone marrow. 
Rat 6.—TZ. rhodesiense in White Rat, ¢, weight 150 grammes, inoculated 
with 500,000 trypanosomes. 
Davee. | 1 | 2 | 3 | 4 5 | 6 | 7 | 8 | 9 
Parasites, per c. mm....) — — — — 72 | 2056 | 1968 | 6420 | 592, killed 
ALEMUNG).iacs vases cisteus tawras ot 38 36 51 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. 
