46 



the aqueous acid solution contained in a cheap glazed stoneware crock 

 of 1 gallon capacity. It is adopted for small accessible compartments, 

 such as living quarters and store rooms. It is not trustworthy for 

 unit quantities of cyanide larger than about 3 lb. — sufficient for about 

 5,000 cubic feet of space — as then the operator must stay a considerable 

 time putting cyanide into a large number of crocks and must then 

 escape through the top of the compartment where the gas soon tends to 

 concentrate. The " barrel " or " Hquid cyanide " method is therefore 

 used for the holds. It is carried out by diluting the acid with part 

 of the water in a barrel which is then swung down to the lowest accessible 

 point in the hold ; the cyanide, previously dissolved in the remainder 

 of the water, is then poured into the barrel from the deck by means of 

 a pitcher and funnel through a long rubber hose. After the cyanide 

 is all in, it is followed, after a few seconds or minutes, by a strong 

 sodium carbonate solution, which expels part of the dissolved hydro- 

 cyanic acid from the waste and reduces the remaining acidity, thus 

 economizing on the expensive cyanide and rendering the waste less 

 poisonous, corrosive and troublesome. 



Gallagher (G. H.). The Transmission of Trypanosoma brucei of 

 Nigeria by Glossina tachinoides, with some notes on T. nigeriense. 

 ~Jl. Trap. Med. & Hyg., London, xvii, no. 24, 15th December 

 1914, pp. 372-375, 1 chart. 



Glossina tachinoides is prevalent in the Eket district of Nigeria, 

 while G. palpalis and G. caliginea come next in order of number. Two 

 strains of trypanosomes, which were brought home for further identifi- 

 cation and study, were found, a third strain, probably T. nanvm, 

 being lost. The first is a polymorphic trypanosome indistinguishable 

 from the Zululand strain of T. brucei and very probably, if not actually, 

 identical with it. It is probably to be found all over Nigeria. 

 This trypanosome is carried in the natural state by G. tachinoides, as 

 has been previously shown by Bouet and Roubaud, who regarded it 

 as T. pecaudi. T. brucei [T. ugandae) and T. pecavdi are considered 

 to be identical, though not naturally always transmitted by the same 

 species of Glossina. It is suggested that an attempt should be 

 made to test the occurrence of a trypanosome producing posterior- 

 nuclear forms in the more fatal cases of human sleeping sickness by 

 inoculating every human case into animals, as this may lead to the 

 discovery that fatal cases put down as due to T. gambiense are really 

 due to what is claimed to be T. rhodesiense. There is ground for 

 belief that the second strain, T. nigeriense, Scott-Macfie, is not 

 identical with T. gambiense and the need for further research on 

 this parasite is indicated. 



Wayson (N. E.). Plague and plague-like disease. A report on their 

 transmission by Stomoxys calcitrans and Musca domestica. — Public 

 Health Reports, Washington, D.C., xxix, no. 51, 18th December 

 1914, pp. 3390-3393. 



Bacterium tularense, the cause of a plague-like disease in rodents, 

 has been found by Wherry and Lamb to be transmissible to man. In 

 investigating the possible role of Stomoxys calcitrans and Musca 



