161 



Galli-Valerio (B.). Recherches sur la Spirochetiase des poules de 

 Tunisie et sur son agent de transmission, Argas persicus, Fischer ; 

 3me Memoire. [Researches on the Spirochaetosis of Tunisian Fowls 

 and its carrier, Argas persicus, Fischer.] — Cenfralbl. f. Bakf. Ite, 

 Abt., Orig., Jena, Ixxii, nos. 6-7, 2()th Jan. 1914, pp. 526-528. 



After noting that according to Nuttall SpirocJiaeta galJinarnni and 

 S. anserina are the same species, the author says that infected indivi- 

 duals of Argas persicus are capable of transmitting spirochaetosis during 

 9 or 10 months. Some of these ticks from Tunisia, 6 months after they 

 reached Lausanne, were able to transmit a fatal disease^to a fowl, without, 

 however, spirochaetes being found in it. This disease could not be 

 transmitted to a pigeon. A. 2)ersicus resists both high and low tem- 

 peratures to a considerable extent. Of 10 individuals exposed for 

 about 4 months to a temperature sometimes as low as 7° C. only 

 one died. This species can apparently remain fasting for 21 months. 



Insect trap. — Ca7ial Fecord, Ancon, vii, no. 25, 11th Feb. 1914, 

 pp. 239-240. 



Mr. Bath, an inspector in the Department of Sanitation, Canal 

 Zone, has patented an insect trap, the principal object of which is to 

 trap mosquitos in a room, without subjecting the occupants to attack. 

 The trap is designed to be placed over the inside of an opening in the 

 w^all, or a window, preferably near the ceihng, so that moscpiitos 

 attempting to enter may be caught. The trap consists of a long 

 wooden frame with hooks for attachment to the wall and with an 

 aperture 8 by 23 inches leading to the cage, a semi-tubular chamber 

 of wire gauze nearly as long as the frame. The ends of this gutter- 

 shaped chamber are closed with flat sheets of \^^re gauze. The 

 mosquitos enter through a wedge-shaped inlet structure that fits into 

 the main cage. The structure is built on a wooden frame of the same 

 size as that described above and consists of a double-walled V-shaped 

 gutter of wire gauze, cut away at the apex. Insects readily enter 

 at the large rectangular base, travel along the sloping sides and pass, 

 first one and then the other of the sht-hke apertures at the apex, 

 but refuse to pass back through the inlet. For use, the cage, 

 with the inlet structure placed in position and kept there by the two 

 wooden frames fitted together, is hung on the wall. Tests made 

 by the inventor with a number of traps showed an average catch 

 of 96 anopheles per diem per trap. Six traps used daily for 60 days 

 captured 37,000 Anopheles. The largest recorded catch was one of 

 1,018 Anopheles taken by one trap in one night. 



VON EzDORF (R. H.). Prevention of malaria. Suggestions on how to 

 screen the home to keep out effectively the mosquitos which spread 

 the disease. — Public Health Reports, Washington, D.C., xxix, 

 no. 9, 27th Feb. 1914, pp. 503-508, 2 pis. 



Not only iron, but copper or bronze wire used for screening, should 

 be treated with varnish or paint, as it is liable to oxidize and corrode 

 in a damp climate, particularly near the sea-shore. In painting wire 



