520 Col. Sir D. Bruce and others. Development of | Feb. 15, 
x 2000. 
Fie. 15.—Trypanosoma gambiense from hind-gut, 8 days after infected feed. 
Fias. 16, 17, and 18.—7. gambiense from mid-gut, 14, 20, and 30 days after infected feed. 
Fie. 19.—T7’. gambiense from hind-gut, 34 days after infected feed. 
Fies. 20 and 21.—T. gambiense from proventriculus, 36 days after infected feed. 
Fie. 22.—T. gambiense from hind-gut, 44 days after infected feed. 
Fies. 23 and 24.—T7. gambiense from mid-gut, 46 and 53 days after infected feed. 
Figs. 15—24 represent smaller forms which are fairly common and occur throughout: 
the intestine and at ail times. The examples given above are taken from the eighth day 
to the fifty-third day. They are called by us “small developmental forms,” since they 
resemble the larger in having clear protoplasm and a compact nucleus. Dividing forms 
are often seen. 
xX 2000. 
Fic. 25.—Trypanosoma gambiense from mid-gut, 8 days after infected feed. 
Fia. 26.—T7. gambiense from fore-gut, 11 days after infected feed. 
Fies. 27 and 28.—7. gambiense from mid-gut, 16 and 17 days after infected feed. 
Figs. 29, 30, and 31.—7. gambiense from fore-gut, 17 and 18 days after infected feed. 
Fie. 32.—T. gambiense from hind-gut, 20 days after infected feed. 
Fies. 33 and 34.—T7. gambiense from fore-gut, 24 days after infected feed. 
Fras. 35, 36, and 37.—7. gambiense from mid-gut, 24, 44, and 46 days after infected feed. 
Fie. 38.—7". gambiense from fore-gut, 46 days after infected feed. 
