165 



Correspondence Relating to the Possibility of the Introduction of Yellow 

 Fever by Land into the Gold Co2^t.~~Rept. Yellow Fev. Commiss. 

 {West Africa), London, iii, 1916, pp. 196-214, 2 maps. [Received 

 14th August 1916.] 



This correspondence includes a letter from the Chief Commissioner 

 of the Northern Territories in which it is stated that Stegomyia fasciata 

 and AnopJieles costalis occur throughout the Protectorate and tsetse 

 flies are found everywhere in the vicinity of the large rivers. The large 

 number of roads entering the Northern Territories from surroimding 

 districts increases the chances of infection and the spread of disease, 

 but at the same time avoids congestion in the movements of cattle. 



Correspondence Relating to the Introduction of Infection into the West 

 African Colonies by Se&.—^RepL Yellow Fev. Commiss. {West 

 Africa), London, ni. 1916, pp. 215-241. [Received 14th August 

 1916.] 



Records are given of the degree of prevalence of mosquito larvae and 

 adults found on vessels trading with ports of the West African Colonies. 

 Adults of the following species were found : — Culex decens, C. duttoni. 

 C. jnpiens, Anopheles {Pyretophorus) costalis, Ochlerotatus sp., Stegomyia 

 fasciata {calopus). Larvae of the following were found in collections of 

 rain water occurring in native canoes or boats plying between the 

 harbour and the shore : — S. fasciata, S. sugens, C. duttoni, C. pipiens. 

 No mosquitos were found in the holds of any of the vessels examined. 

 The places most infested by mosquitos were Forcados, Opobo, Benin. 

 Brass, Okrika and Port Harcourt. 



Descazeaux (J.). Traitement de la gale. [Treatment of Mange.] — 

 Recueil Med. Vet., Alfort, xcii, no. 14, 30th July 1916, 

 pp. 227-237, 1 fig. 



The usual treatment of French army horses at the front when 

 suffering from mange has been to smear their coats with some parasiti- 

 cide in a basis of grease or vaseline and to leave them unwashed for a 

 week or more. The result is that all the dust and dirt to which they 

 are exposed sticks to the hair, the coat becomes excessively filthy and 

 the condition of the animals is rendered worse rather than improved. 

 As the loss of service from sarcoptic mange among the horses of the 

 French army has been very serious, in some units as much as 60 per 

 cent., the author, who has a high opinion of the value of dipping as 

 practised in South America, has urged and, despite great opposition, 

 has succeeded in obtaining the construction of a proper dipping tank, 

 a scale drawing and detailed description of which is given. The bath 

 was warmed by a steam jet passing directly into the dip, which is 

 necessarily diluted by the condensed steam by about 28 gallons per 

 diem. As the composition of " Sarnol," a commercial article much 

 used in South America was not known, the following mixture was tried 

 with success, containing in parts per 1,000 of water, cresyl 25, arsenious 

 acid 1, potassium polysulphide 6, sodium carbonate 10. The simplest 

 method of preparation was to place the ingredients in proper propor- 

 tions in sacks and suspend these for a whole night in the total quantity 

 of liquid required ; by keeping a quantity of the mixture always 



(C323) Wt.Pl/106. 1,500. 11.16. B.&F.Ltd. Gp.11/3. A 



