113 



and in spite of the occurrence of Stegomyia all the year round 

 and the fact that thousands of susceptibles are bitten, the only 

 epidemics occurring in the hot months were limited to adult males 

 and probably due to importation from Central America. 



MiTZMAiN (M. B.). The role of Stomo.vys calcitrans in the trans- 

 mission of Tn/2)anosoma evansi. — Philippine Jl. Science, vii, 

 B, no. 6, Dec. 1912, pp. 475-519, 5 pi., IT tables. 



Only negative results were obtained in the attempts at direct 

 mechanical transmission of surra with Stonioxys calcitrans which 

 were induced to bite healthy animals (horses, monkeys, and 

 guinea-pigs). The results of experiments indicate that Trypano- 

 soma evansi does not develop in the body of the fly and could 

 not be found in the latter beyond eighteen hours after feeding on 

 an infected animal. Pathogenic trypanosomes were found in 

 the proboscis of the fly thirty seconds after feeding on infected 

 blood. Within one minute and thirty seconds the organisms were 

 not present in the mouth parts in a form capable of infecting by 

 inoculation into guinea-pigs. Stomoxys has been shown to pro- 

 vide through its bites the infection of Musca domestica and other 

 dung flies. These flies have been proved to harbour the surra 

 organisms for several hours. It is demonstrated that the indi- 

 vidual glass-tube method is the most suitable for applying flies in 

 feeding on experimental animals and for keeping* flies for long 

 periods under laboratory conditions. The paper concludes with a 

 fairly extensive bibliography and photographs showing a screened 

 stable for fly experiments with horses ; an immobilised guinea- 

 pig in a large glass jar for experiments with great numbers of 

 flies ; method of applying an unlimited number of Stomoxys to a 

 monkey's tail enclosed in a large bottle; feeding of Stomoxys in 

 inverted tubes on an immobilised monkey; and single tube appli- 

 cation of Stomoxys on a guinea-pig. 



Barber (M. A.). The susceptibility of Cockroaches to Plague 

 Bacilli inoculated into the Body Cavity. — Philippine Jl. of 

 Science, vii, B, no. 6, Dec. 1912, pp. 521-524. 



Experiments made in the Biological Laboratory, Bureau of 

 Science, Manila, show clearly that cockroaches may be infected 

 by very large doses of virulent plague bacilli. It may be con- 

 cluded that these insects, especially Rhyparohia inaderae, are 

 little susceptible to plague inociilated into the body cavity. 



Serge?;t (E.) & Sergext (E.). Etudes epidemiologiques et prophy- 

 lactiques du paludisme. [The epidemiology and prophylaxis 

 of malaria.] — Annales Je VInstitnt Pasteur, xxvii, no. 5, 

 25th May 1913, pp. 373-390. 6 figs. 



The current report on the investigations carried out by the 

 Government of Algeria states that there was a marked recru- 

 descence of malaria, especially in the Mitidja and SeybouseYalley 



