358 EXPERIMENT STATION EECOED. 



this room. The material costs about tlie same as sulpliur, requires only 1 hoiir 

 for treatment as compared with 2 hours with sulphur, does not injure metals, 

 fabrics, paint, or color, and is not particularly irritating or harmful to human 

 beings. 



Mites affecting farm homesteads, T. D. Jarvis {Canad. Ent., 38 {1906), 

 No. 7, pp. 2,i!)-2Jfl). — A description is given of a serious infestation of a house 

 with Ti/rogluplius longior. The mites occurred in large numbers and collected 

 on clothing and other articles. The house was tightly closed and fumigated 

 with hydrocyanic-acid gas, using 24 oz. of cyanid to 1,000 cu. ft. The treatment 

 Ijroved (juite effective and apparently destroyed all of the mites. 



Cockroaches, \\. W. Froggatt {Agr. Gas. N. 8. Wales, 11 {1906), No. 5, pp. 

 4.'iO-JiJi7, jjL 1). — The author describes several of the common species of cock- 

 roaches in New South Wales and presents a brief account of practical methods 

 for controlling the pest. The methods include the use of phosphorus paste, 

 borax, gunpowder, bisulphid of carbon, and hydrocyanic acid. 



The reaction of insects toward formalin fumes, K. Lampekt {Ztsclii: Wiss. 

 Insektcnhiol., 2 {1906), No. 1, pp. 12, 13). — On the occasion of fumigating a 

 house after an outbreak of scarlet fever the author placed a number of insects 

 in open glass vessels and other situations to note the influence of formalin 

 fumes upon them. The fiunigation was prolonged for 4 hours. The insects used 

 in this experiment were cockroaches, spiders, larvse of wasps, etc. None of 

 the insects were affected by the formalin fumes. The author believes, therefore, 

 that formalin is not adapted for the destruction of insects in houses. 



Destruction of insects in greenhouses by hydrocyanic acid, L. Tillieb 

 {Jour. Agr. Prat., n. ser., 12 {1906), No. 32, ijp. 181, 182, fig. i).— The use of 

 hydrocyanic acid in destroying insects in greenhouses is, becoming more gen- 

 erally practiced in France. For this purpose a special apparatus is illustrated 

 and recommended. For ordinary greenhouse work the author suggests the use 

 of 2.5 gm. of potassium cyanid for a cubic meter of space. 



Arsenate of lead, C. P. Lounsbury {Agr. .Jour. Cape Good Hope, 29 {1906), 

 No. 2, pp. 223-228).— The author states that arrangements have finally been 

 made by which an excellent quality of arsenate of lead may be obtained in 

 Cape Colony. This insecticide is recommended as superior to Paris green or 

 any other arsenical poison for use against the codling moth and most leaf-eating 

 insects. 



Spraying to control or prevent injury from insects and plant diseases, 

 R. I. Smith {Ga. Bd. Ent. Bid. 19, pp. 127-168, figs. 3). — A general statement 

 is given regarding the importance of spraying and the use of insecticides and 

 fungicides. » 



The main part of the bulletin is occupied with fornuilas for preparing and 

 directions for applying a standard insecticide and fungicide. A spray calendar 

 is also given recommending applications for the more common injurious 

 insects and fungus diseases. 



Apiculture, R. Hommell {Apiculture. Paris: J. B. Bailliere d Son, 1906, 

 pp. XIl+5-'i2, figs. 178). — This volume is one of a series which will constitute 

 an agricultural encyclopedia published under the direction of G. Wery. The 

 whole subject of bee raising is discussed in detail. The subject-matter of the 

 volume is arranged under the following heads : Anatomy and physiology of 

 bees, biology of bee colonies, wax. nectar, honey, bee plants, structure of bee- 

 hives, management of bees, extraction of honey, utilization of all bee products, 

 and the various enemies of bees. 



Bees and the corolla of flowers, F. Faideau {Apiculteur, 50 {1906), Nos. 

 8, pp. 98-107, figs, o; 5-6, pp. 195-203, figs. 5). — A study was made of the 



