149 



tables and charts, and the life-cycle of the insect is described and 

 illustrated. The methods suggested for eliminating the pest include 

 the usual ones for dealing with the breeding-places and for destroymg 

 the adults. 



ScHAFFER (J. M.). Saponified Cresol Solutions.— ?7.*S. Bejit. Agric, 

 Washington, D. C, Bull. 855, 6th May 1920, 5 pp. 



Experiments are described with saponified cresol solutions made 

 by using soap mixtures composed largely of resin soap. These 

 solutions have at least as great a disinfecting power as those made with 

 linseed-oil soap, and are much cheaper. Solutions containing resm 

 soap appear to have a somewhat higher disinfecting power than those 

 containing only vegetable oil or fish oil. When diluted with water 

 to a 3 per cent, solution they remain clear for varying periods dependmg 

 upon the amount of resin soap present. 



PiSHER (L. M.). What can a Community afford to pay to rid itself 



of Malaria 'I— U.S. Public Health Reps., Washington, D. C, 



XXXV, no. 22, 28th May 1920, pp. 1269-1273. 



This paper emphasises the economic loss due to malaria [R.A.E., B, 



vi, 168 ; viii, 64]. If the annual loss due to this disease is Calculated 



and capitaUsed, a cash expenditm-e to effect rehef is justified as an 



investment up to an equal amount, less a sum the interest on which 



will pay the maintenance charges on the permanent work. This 



point is worked out in detail. 



Hornby (H. E.). A Contagious Impetigo of Cattle.— 7e«. Jl, London, 

 Ixxvi, no. 6, June 1920, pp. 210-216, 2 figs. 

 In this article on contagious impetigo in Africa the author considers 

 the theory that bont ticks [Amblyomma hebraeum] account for the 

 spread of the disease difficult to reconcile with the relative positions 

 occupied on the body by these ticks and many of the lesions, unless 

 it is postulated that a virus is introduced into the blood. Propagation 

 from beast to beast takes place through the medium of infected 

 rubbing places, contaminated fitter or trek-gear ; possibly, also, 

 thi'ough the agency of whips and flies. 



Pauer (W.). Bots in the Oesophagus.— Fe«. Jl, London, Ixxvi, 

 no. 6, June 1920, p. 223. 

 A case is recorded in which post-mortem examination of a horsa 

 showed that the fiving membrane of the oesophagus four inches from 

 the stomach entrance was packed with bots [Gastrophilus]. They 

 extended for about five inches, and were obviously responsible for a 

 difficulty in swallowing noted before death. An intestinal twist 

 which was the actual cause of death seems to have been a coincidence. 



DiTLEVSEN (C). Acarodermatitis e Copra.— ^rr/i. /. Schijfs- u. Trop.- 



Hyg., Leipsic, xx, no. 23, December 1916, pp. 503-511. 



This paper reviews recorded cases of copra itch [R.A.E., B, i, 15 ; 



iv, 46] with notes made during the unloading of three vessels at 



Copenhagen during 1914-1916, only the stevedores being affected on 



