191 



Auss., are described. Tests were made with a guinea-pig and a rat, 

 and finally the author allowed himself to be bitten four times on the 

 finger, poison being injected each time. In no case was there any ill 

 effect beyond temporary pain at the point of injection. The rat was 

 the most affected, showing periods of restlessness and of coma for 

 about four hours, after which it entirely recovered. 



Ingram (J. H.). Delouser. — China Med. JL, Shanghai, xxxvi, no. 3, 

 May 1922, pp. 225-229, 2 plans. 



The construction of a delousing and disinfecting apparatus with 

 attached bathroom and dressing rooms is described. A few hours 

 of firing causes the temperature to rise above 80^ C. [176° F.], and 

 only 20 minutes is required to kih all lice and their eggs, the floor 

 becoming sufficiently hot to kill all vermin as they fall and the double 

 walls with an air space between them minimising the radiation of heat. 



Young (C. W.). Delousing with special reference to the Ingram 

 Apparatus. — China Med. JL, Shanghai, xxxvi, no. 3, May 1922, 

 pp. 230-242. 



The history of the utilisation of heat for destroying lice in clothing, 

 etc., is reviewed. The apparatus recorded in the preceding paper 

 was' selected on account of its simplicity and economy in construction 

 and operation, and was found to work satisfactorily. One of the 

 advantages of the dry heat method is that the disinfected clothing 

 is immediately ready for wearing. Details are given as to the pro- 

 tective clothing and organisation of the personnel and of the control 

 of the patients. Kerosene emulsion was used for the hair, and some 

 account is given of the pediculicides recommended by various authors, 

 especially naphthaline. 



SoBRERO (L. R.). La Sarna del Ganado Lanar. [Sheep Mange.]— 

 Gaceta Rural, Buenos Aires, xv, no. 179, June 1922, pp. 1237-1245. 



An account is given of the symptoms and nature of mange in sheep, 

 and of the life-history and habits of the mite, Psoroptes communis, 

 var. ovis, that causes it. It is pointed out that the most important 

 factor in the dissemination of mange among sheep is the practice, 

 common in South America, of keeping rams from many flocks together 

 under one shepherd, until such time as they are distributed among 

 the various flocks of ewes. If any of the rams become infested, they 

 probably communicate the disease to all the others, with the result 

 that it is distributed among all the various flocks to which they belong. 

 It is estimated that 90 per cent, of infestation is caused in this way, 

 and it is recommended that all rams should be dipped shortly before 

 they are distributed among their flocks. 



NiEscHULZ (O.). Unsere bisherigen Kenntnisse von der Flagellaten- 

 krankheit der Pflanzen. [Our Present Knowledge of the Flagellate 

 Disease of Plants.] — Zeitschr. Pflanzenkrankh. u. Gallcnkunde, 

 Stuttgart, xxxii, no. 3-4, 1922, pp. 102-108, 2 figs. 



The title of this article indicates its contents. 

 (7673) Q 2 



