76 



and T. congolense [pecorum) respectively. The importance of this 

 distinction is obvious when it is reaUsed that carnivora, rodents, and 

 the Anthropoidea are unaffected by T. nanum, but succumb to 

 T. congolense. Here the tendency of laboratory results is to eliminate, 

 as an unimportant variation, a character which natural selection seems 

 to have fixed as a specific difference. But the tendency which is 

 particularly deprecated by the author is an opposite one, namely 

 to manufacture specific differences between strains of trypanosomes 

 which natural tests indicate to be identical. Had more attention been 

 paid to the comprehensive study of these various organisms — T. brucei, 

 T. pecaudi, T. ugandae, T. rhodesiense, etc. — such a variety of names 

 would never have arisen. In considering the diagnosis of any 

 trypanosome, the first test to apply is concerned with its behaviour 

 in the Glossina host. Evidence of this nature is unfortunately not 

 available in the case of all the above trypanosomes. The nomenclature 

 to be adopted in dealing with the wild game parasites is a difficult 

 one. In the case of T. rhodesiense, the name T. brucei var. rhodesiense 

 appears to meet the situation, and to express better the relationships 

 involved. 



Bahr (P. H.). Notes on Yaws in Ceylon, with Special Reference 

 to its Distribution in that Island and its Tertiary Manifestation. — 



Ann. Trop. Med. Parasit., Liverpool, Ser. T.M., viii, no. 4, 

 29th January 1915, pp. 675-680, 1 pi. 



It is stated that, although the house-fly, Musca doynestica, has on 

 experimental grounds been incriminated as a conveyer of the yaws 

 spirochaete in Ceylon by Castellani, in that island, at least on epidemio- 

 logical grounds, there is little to support this supposition. Firstly, 

 because this insect is unprovided with piercing mouth-parts and 

 from the nature of its habits is unable to inoculate the germ on an 

 unbroken skin. Secondly, because this fly is far more abundant in 

 the elevated planting districts where the conditions appear to be more 

 favourable for its propagation, and where yaws appears to be unknown, 

 than in the low country where the disease is common. 



Sani (V.) & Guard ASONi (M.). "Un rimedio poco costoso contro i 

 pidocchi dei bovini. [A cheap remedy against cattle ticks.] — 

 Rivista Agricola Comnierciale, Reg gio- Emilia, iv, no. 1, 1st 

 January 1915, p. 19. 



It is stated that water in which potatoes have been boiled, acts 

 as an insecticide against cattle ticks owing to the solanine which it 

 contains. It is considered worthy of a trial ; the fluid should be 

 applied with a brush. , ■■ , 



Chapin (K. M.). a Field Test for Lime-Sulphur Dipping Bath.— C7. S. 

 Dept. Agric, Washington, D.C., Bull. 163, 12th January 1915, 

 7 pp., 2 tables, 1 fig. 



The lime-sulphur dippmg baths now in use mider official regulations 

 in the United States consist essentially of a mixture of calcium 

 polysulphide and calcium thiosulphate. The Bureau of Animal 

 Industry has no present proof that the latter is of any value for the 



