167 



RouBAUD (E.). Mode d'Action du Trioxymethylene en Poudre sur la 

 Larve d'Anophele. — C.R. hebdom. Acad. Sci., Paris, clxxi, no. 1, 

 5th July 1920, pp. 51-52. 



Powdered trioxymethylene has a twofold effect on Anopheles larvae, 

 first paralysing them and then preserving the tissues from decomposition. 



Bedford (G. A. H.). Ticks found on Man and his Domestic Animals 

 and Poultry in South Africa. — Jl. Dept. Agric, Pretoria, I, no. 4, 

 July 1920, pp. 317-340, 29 figs. 



A useful resume is given of the classification of ticks, with notes on 

 how to distinguish the difi'erent species, their life-histories, their animal 

 hosts and the diseases they transmit. Its object is to enable farmers to 

 recognise the difi'erent species, and thus prevent their spread. 



The paper concludes with a list of ticks that have been found on man 

 and domestic animals in South Africa and of the diseases transmitted 

 by them. 



Manetti (C). L'Allevamento del Bestiame nell' Africa Occidentale. 

 I. Angola. [Cattle Dreeding in West Africa, I. Angola.] — IJ Agric. 

 Colon., Florence, xiv, no 6, June 1920, pp 257-268. 



The information given here on cattle breeding in Angola, Portuguese 

 West Africa, has been obtained from several sources to which full 

 reference is made. 



Among the injurious insects recorded are : — Glossina palpqlis var. 

 wellmani, Aust., transmitting Trypanosoma pecwidi ; the ticks, 

 Boopliihis (Margaropus) decoloratus and Rhipicephalus appendiculatus, 

 transmitting Piroplasma bigeminam and Theileria parva ; Rhipice- 

 phalus simiis (black-pitted tick) ; R . evertsi (red tick) ; and Ambly- 

 omnia hehraeum (bont tick). 



Dipping Cattle for Mange in the Prairie Provinces. — Agric. Oaz. 

 Canada, Ottawa, vii, no. 6, June 1920, pp. 479-481. 



In consequence of the presence of mange amongst the herds of 

 Southern Alberta and South-Western Saskatchewan, the United States 

 prohibited the importation of all Canadian cattle from mange-infected 

 areas, except for immediate slaughter. In view of this, and of the 

 fact that under the existing regidations the disease, which had been 

 present for a number of years, could not be wiped out without more 

 active co-operation than the stock owners would give, a compulsory 

 dipping order was passed, providing for a first dipping commencing on 

 4th June, and a second dipping not less than ten nor more than 

 fifteen days thereafter. The interval is designed to ensure the 

 destruction by the second dipping of those parasites that were in 

 the egg- stage at the time of the first. 



A number of regulations for the shipment of cattle provide for 

 certificates for animals shipped outside the area for purposes other 

 than immediate slaughter, or for any cattle exported to Europe ; for 

 an inspection at Winnipeg of cattle for immediate slaughter gomg east ; 

 and, in the case of infected cattle for immediate slaughter on transit 

 within the area, for the prevention of the spread of infection. The 

 protection from infection of cattle passmg through the area from 

 outside is also considered. 



