59 



and in some cases extended up to 11 months (July, 1917), during which 

 time the troops were living under conditions of hard work and continued 

 exposure, which are usually considered favourable to an outbreak. 

 These conditions were very marked during the advance in 1915, and it 

 is suggested that the resultant continued metabolic changes may have 

 curbed injurious developments, while later on the men were resting in 

 winter, a season during which the parasites were inactive. 



Koch (J.). Zur Uebertragung des Erregers des europalschen Ruckfall- 

 fiebers (Febris recurrens) durch die Kleiderlaus. [The Transmis- 

 sion of the Agent of Eurojjean Recurrent Fever by the Clothes 

 Louse.] — Deutsche Med. Wochenschr., Berlin, xliii, no. 34, 23rd 

 August 1917, pp. 1066-1069, 6 figs. 



An outbreak of recurrent fever among Rumanian prisoners of war 

 enabled the author to ascertain that the clothes louse [Pediculus 

 humanus] is by far the most common and dangerous transmitter of the 

 disease. It is not necessarily the only one, for in the course of an 

 experiment bed-bugs that were allowed to feed once on patients whose 

 blood contained spirochaetes were immediately afterwards found to be 

 infected, while others, used as controls, were not. 



Kraus (R.)&Rosenbusch(F.). Kropf, Kretinismus und die Krankheit 

 von Chagas. [Goitre, Cretinism and Chagas' Disease.] — Wiener. 

 Klin. Wochenschr., Vienna, xxx, no. 35, 30th August 1917, 

 pp. 1104-1105. 



Maggio and Rosenbusch have shown that Triaioma infestans infected 

 with a trypanosome, probably identical with Trypanosoma cruzi, 

 occurs in many parts of Argentina [see this Review, Ser. B, iii, p. 205]. 

 On the other hand goitre has only been found in the northern 

 mountainous provinces of Salta and Jujuy. It has never been possible 

 to demonstrate the presence of the parasite in the persons affected, 

 nor do the acute forms of Chagas' disease found in Brazil occur in 

 these provinces. Infected Triatoma abound in the Calchaqui valleys 

 in Salta, but goitre and cretinism are absent. This is also the case in 

 Cordoba and Buenos Aires, so that the conclusion is reached that in 

 Argentina Triatoma does not convey Chagas' disease, perhaps owing 

 to climatic conditions. Further information is required as to whether 

 endemic goitre and cretinism occur in the mountainous districts of 

 Brazil, and whether infected Triatoma and Chagas' disease are present 

 in the plains. 



Hase (A.). Experimentelle Untersuchungen zur Frage der Lause- 

 bekampfung. [Experimental Investigations concerning the 

 Control of Lice.] — Centralbl. Bakt., Parasit. u. Infektionskr., Jena, 

 Ite Abt., Ref., Ixvi, no. 14, 9th November 1917, pp. 344-346. 

 [Abstract from Zeitschr. Hyg. u. Infektionskr., Ixxxi, 1916, p. 319.] 



The first part of this paper records experiments against lice with 

 various reagents. It was found that 3 and 5 per cent, solutions of 

 cresol-soap killed lice and their eggs within an hour. At 1 per cent, 

 strength 4 hours are required ; this weaker solution is suitable for 

 washing linen. These results also apply to carbohc acid, except that 



