CONTENTS 
CHAPTER PAGE 
Preface. 
I. Introduction .......... I 
i. Laboratory Methods ....... i 
II. Human Trypanosomiasis in the Gambia ..... 6 
I. Distribution ........ 6 
1. Prevalence ........ 8 
3. Symptomatology ........ 8 
Description of two European cases ... 9 
(J?) Description of six native cases . . . 17 
III. Equine Trypanosomiasis in the Gambia ...... 24 
1. Distribution and Prevalence ..... 24 
2. Description of ten cases . . . . . . 27 
IV. Morphological Characteristics of Human and Horse Trypanosomes 
found in the Gambia . . . . . . . . 36 
1. In Man and in Horse ....... 36 
2. In Rats 38 
V. Transmission Experiments ........ 40 
VI. Results of Inoculation of the Gambian Human and Equine Trypano- 
somes in Experimental Animals ...... 45 
1. Inoculation Experiments ...... 45 
2. Resume of Inoculation Experiments .... 45 
3. Tables ......... 46 
4. Inoculations from ' H. K.' ...... 47 
5. Notes on Post-Mortems of Experimental Animals . . 47 
VII. Other forms of Flagellata found in Senegambia 
Bibliography. 
Appendix — Note by F. V. Theobald, M.A. — A New Culicid from 
Senegal, etc. 
