666 SCIENCE PROGRESS 



the ordinary preventive measures are inapplicable in dealing 

 with this terrible and fatal disease. Quarantine is impossible. 

 Aggregation of the sick for isolation in large numbers is difficult 

 and of little use. The most practical method is removal of the 

 sick in each community from direct communication with the 

 fly-range. Where carried out thoroughly, this would stamp out 

 the disease, and it should be primarily enforced in the camps 

 and villages of the main lines of communication. 



The importance of these preventive measures will be seen 

 when the failure of the medical treatment is considered. When 

 once the disease has gained a footing, it has, more or less 

 delayed, only a fatal termination. 1 It is to be hoped that the 

 experiments now in progress will give a more effective remedy, 

 but as far as our present knowledge extends, prevention is 

 the only way of dealing with the disease. 



List of References 



Most of the references quoted above are to be found in the 

 Report of the Sleeping Sickness Commission, published in the 

 Royal Society's Transactions from August 1903 to February 1907. 

 The Reports are in eight parts, numbers i. to viii. References, 

 below in Roman figures refer to the number of the Part, and 

 in Arabic figures to the number of the article referred to. 



Report by G. C. Low, M.A., M.B., and also by Aldo Castellani, M.D. (Florence). I. 2. 



Report by Cuthbert Christy, M.B., CM. III. 6. 



Report by Lieut. -Col. David Bruce, R.A.M.C, F.R.S., David Nabarro, M.B., 



and Capt. E. D. W. Greig, I. M.S. IV. 8. 

 Report by David Nabarro, M.D., and Capt. E. D. W. Greig, I. M.S. V. 10. 

 Report by Capt. E. D. W. Greig, I.M. S., and Lieut. A. C. H. Gray, R.A.M.C. VI. 11. 

 Report by Capt. E. D. W. Greig, I. M.S. VI. 12. 

 Distribution of the Tsetse Flies, by E. E. Austen, F.Z.S. VI. 13. 

 The Multiplication of the Trypanosoma gambiense in the Alimentary Canal of 

 Glossina palpalis, by Lieut. A. C. H. Gray, R.A.M.C, and Lieut. F. M. G. 

 Tulloch, R.A.M.C. VI. 14. 

 Report by Lieut. A.!CH. G rayand the late Lieut.F.M.G.Tulloch, R.A.M.C. VIII. 16. 

 Report on Experiments to ascertain the Ability of the Tsetse Flies to convey 



Trypanosoma gambiense, by P. H. Ross. VIII. 17. 

 Report by Dr. A. Hodges. VIII. 18. 



Glossina palpalis in its relation to Trypanosoma gambiense and other Trypano- 

 somes, by Prof. E. A. Minchin, Lieut. A. C H. Gray, and the late Lieut. 

 F. M. G. Tulloch. VIII. 21. 



1 Since the above was written three cases have been reported as cured after the 

 administration of Liquor Arsenicalis (Fowler's solution). " Rapport s. 1. Travaux a 

 Lab. d. 1. Soc. Beige, etc., a Leopoldville," Bruxelles, 1908. See also Brit. Med. 

 Jonrn., March 13, 1908, p. 681. 



