VETERINARY MEDICINE. '389 



Mode of transmission of trypanosonies by tsetse flies (t^Iccpiiig thickness 

 Bur. [Loiuloit] Bui. 5, pp. 177-180). — ^A review of the literature on this subject 

 to wliich is apiiended a list of the papers consulted in this and the above 

 accounts. 



Note on the occurrence of a trypanosome (Trypanosoma cuniculi) in 

 the rabbit, J. H. Ashwokth and J. P. Macgowan (Jour. Path, and Bad., 

 13 (1U09). Xo. .'f, pp. .'iJ7-.'f'i^). — Triipiuiosoma cuniculi has been comparatively 

 seldom noticed, although it has been previously recorded from the blood of 

 either wild or tame rabbits in Elstree (Herts). Bordeaux. :Montpellier, Tliomar 

 (Portugal), and Sardinia. The authors here report the presence of this or- 

 ganism in tame rabbits obtained in and ai'ound Edinburgh. The health of the 

 host is, accordiug to the authors" observations of 5 strongly infected rabbits, not 

 appreciably affected by the presence of large numbers of T. cuniculi in the 

 blood. 



The properties of serums in trypanosomiasis. Races resistant to these 

 serums, F. Mesnil and E. Brimont (Ann. Inst. Pasteur, 23 (1909), No, 2, 

 pp. 129-15.'f; abs. in Sleeping Sickness Bur. [Londnn] Bui. 6, pp. 218-222).— The 

 history of this subject is given in some detail. The conclusions arrived at are 

 as follows : 



" The serum of animals infected with subacute, and more especially chronic 

 trj'panosomiasis, acquires siiecific protective properties very quickly. A mixture 

 of this serum with ti'ypauosomes prevents infection of mice. The appearance of 

 these properties and their degree are independent of the course of the disease; 

 they diminish somewhat quickly after recovery, if it occurs. This protective 

 power is up to a certain point specific; it may help in tlie differentiation of 

 trypanosonies. It resists heating from 5G to 64°. The active substances are 

 fixed at least in part on the trypanosomes, which may then be injected into 

 mice without effect. The active serums do not exercise in vitro any micro- 

 bicidal action on the trypanosomes, even when one adds mouse serum (comple- 

 ment). In vivo there is seen in the peritoneum of mice which have received a 

 mixture of trypanosomes and serum a rapid phagocytosis of the parasites, the 

 vitality of which has been completely preserved. All the effects observed lead 

 one to think that the serums act by making the trypanosomes capable of inges- 

 tion by phagocytes, and that they are comparable to the antibodies with alexin 

 and sensitizing substance. One can obtain from the blood of the animals whicli 

 furnish the serum trypanosomes which are refractory to these homologous 

 serums, and which keep their properties for a good many generations measured 

 by passage in mice (a little less than 19 for a trypanosome isolated from a 

 he-goat, at least 19 for one obtained from a dog). The strain from the he-goat 

 is sensitive to the dog's serum, that of the dog to the goat's serum, but with 

 some diminution in comparison with the normal mouse strain. The strain from 

 the he-goat, which is extremely resistant to the serum obtained at the same time, 

 is no longer resistant to that obtained at a later bloodletting." 



Trypanosomiasis in the Anglo-Egyptian Sudan, A. Balfour (Rpt. Well- 

 come Research Labs. Gordon Mem. Col. Khartoum, 3 (1908), pp. 27-35, pi. 1, 

 map 1). — Owing to the destruction by fire of nearly all of the records of try- 

 panosomiasis work, and especially that on therapeutics carried out by the 

 author, the report has had to be much curtailed. The work on camel try- 

 panosomiasis is briefly reviewed. Regarding the carrier of this trypanosome 

 (probably Trypanosoma soudancnse) the author states that Glossina morsitaus 

 exists at Kawalib in the Kordofan Province, but that the fly belt is very 

 limited and it is almost certain that some species of Tabanus, probalily 

 Tnbanns socius, is effective. This species has been found in the districts 

 where the disease occurs and the natives attribute the illness to its bite. It 



