188 



Africa is suggested : (a) Southern sleeping sickness, caused by 

 T. rJiodesiense, Stephens and Fantham (1910), and spread by Glossina 

 morsitans, Westw. ; (6) equatorial sleeping sickness, caused by 

 T. castellanii, Kruse, and spread by G. palpalis, Rob.-Desv. ; 

 (c) northern sleeping sickness, which may be caused by as yet 

 imperfectly known trypanosomes, including T. gambiense, Button, 

 T. nigeriense, Scott-Macfie (1913), and perhaps also by other forms 

 not yet known. 



Bruce (Sir D.), Hamerton (A. E.), Watson (D. P.) & Bruce (Lady). 

 The Trypanosome causing Disease in Man in Nyasaland. Part IV. 

 Experiments on Immunity. — Proc. R. Soc, London, B, Ixxxviii, 

 no. 602, Sept. 1914, pp. 190-226. 



An account is given of experiments made to discover whether the 

 naturally infected dog strain of Trypanosoma hrucei vel rhodesiense 

 would protect against the other strains, which have been described 

 in previous papers. The experiments were one-sided and incomplete, 

 owing to lack of material, but they have, the authors believe, proved 

 that (1) the naturally infected dog strain does not immunise 

 animals against the human, wild Glossina morsitans, and Zululand, 

 1913, strains ; (2) the wild G. morsitans strain and the naturally infected 

 dog strain do not protect animals from the human or the Zululand, 

 1913, strain ; (3) the wild G. morsitans strain does not protect against 

 the human strain. 



In spite of this evidence to the contrary, it is still considered by 

 the authors that the naturally infected dog strain is a weak strain 

 of T. brucei vel rhodesiense. 



Ward (W. F.). Effects of tick eradication on the cattle industry of 

 the South. — U.S.Dept. Agric, Bur. Aniin. I mlust., Washington, 

 D.C., 1914, 26 pp., 8 figs. 



This popular publication details the recent improved condition of 

 the cattle in the tick-free areas of the Southern States. An instance 

 of the beneficial effect of tick-eradication is furnished by the city of 

 Jackson, Tenn., and the territory surrounding it, where losses in cattle 

 have fallen from an average of £1,300 per annum to about £20. Here, 

 as in the other districts mentioned, attention is also drawn to the 

 higher prices now obtainable for cattle. 



Boss (P. H.) & Pirie (J. H. H.). The transmission of trypansomes 



by Glossina longipennis. — Nairobi Laboratory Report for January- 

 Jime 1913, Nairobi iv, pt 1,1914, pp. 7-11 ; July-December 1913, 

 iv, pt. 2, 1914, pp. 1-4. 



It was noted in the report for the latter half of 1912 that a trypano- 

 some conveyed by Glossina longipennis had been found. Experiments 

 have now been made as to the animal reactions of this trypanosome 

 and the possibility of transmitting it by Glossina longipennis under 

 laboratory conditions. The result of the inoculation experiments was 

 peculiar, in that for a time after high infection they appeared to fail 

 entirely, but on being persisted in the same intensive infection was 

 obtained as at first. Attempts to convey the trypanosome from an 



