FOODS ANIMAL PRODUCTION. 771 



The Coccidae of Kansas, S. J. Hunter (Kansas Univ. Quart., S (1899), Xo. l,pp. 

 1-15, pi. 1). — Critical notes and descriptions of new species. 



Odor of the San Jose scale, F. M. Webster (Canad. Enf.,31 (1899), No. 1, p. 4). — 

 Attention is called to the odor which is associated with Aspidiotus perniciosus hy 

 which, in cases of considerable abundance, the scale can be detected at a consider- 

 able distance. When the air is quiet it is often possible to detect the presence of a 

 badly infested tree at a distance of a yard or more. The author comments on the 

 possession of this odor and states that possibly in its native home this may attract 

 insects and afford means of diffusion which are not present in this country. 



A new danger to fruit growers, L. R. Taft (Michigan Sta. Spec. Bui. 7, pp. 3). — 

 Attention is directed to the San Jose scale and the growers are warned against its 

 attacks. 



Summer treatment for the San Jose scale, W. B. Alwood ( Virginia Sta. Bui. 74, 

 pp. 28-34, jigs. 3). — This records data obtained in the use of pure kerosene against 

 the San Josd scale since the publication of Bulletin 72 of the station (E. S. R., 9, p. 

 1067). Instances are noted in which kerosene proved very injurious to the trees, but 

 in many cases no serious injury was noted, even when trees were in flower at the 

 time of spraying. In regard to the use of kerosene the author says : 



" The foregoing abstracts and unpublished matter in the records of the work now 

 in progress show that pure kerosene can be safely used upon all our fruit trees in the 

 dormant season and with proper precautions during the growing season also. The 

 chief point to be observed in its application is the proper atomization of the kero- 

 sene. Unless it be applied in a finely atomized condition, and in quantity so as to 

 just moisten the parts of the plant there is danger. The skill and judgment neces- 

 sary to insure safety in this work are not such as to preclude the use of kerosene by 

 fruit growers, hence in the light of the above and other unpublished experiments, I 

 recommend it as a summer treatment for San Jose" scale. I believe it to be the treat- 

 ment par excellence, as in every case where I have used it on this scale it has destroyed 

 them with great certainty. It is too soon to make an absolute statement as to the 

 degree of efficacy, but the experiments now under way will furnish much data on 

 this point by the end of the season." 



Three forms of apparatus for spraying kerosene are figured and briefly discussed. 

 Some form of blast atomizer is thought to be best. 



Hydrocyanic-acid gas fumigation, A. F. Woods (Florists' Exchange, 10 (1S0S), 

 Xo. 40, p. 1146). — Reports on tests made to observe the eft'ect of weak doses of hydro- 

 cyanic-acid gas for long periods on greenhouse plants in large houses. It was found 

 that any dose weaker than 0.15 gm. of 98 per cent cyanid per cubic foot of space in 

 the house for 20 minutes was ineffectual. 



Fumigation of fruit with hydrocyanic acid, F. B. Guthrie (Agr. Gaz. Xew 

 South Wales, 9 (1S98), Xo. 10, p. 1191). — Oranges, lemons, and apples were placed in 

 a small chamber and treated for 3 hours with vapor of hydrocyanic gas. After 

 exposing the fruit in the open air for half an hour no trace of the acid could be 

 detected in the flesh or outer skin of the fruit by smell, taste, or chemical examina- 

 tion. No live scale remained. 



Legislation for the suppression of the San Jose scale, W. B. Alwood ( Virginia 

 Sta. Bui. 74, pp. 21-28). — The law of Virginia relating to the San Jose scale is given, 

 together with comments by the author of the bulletin. The lines of work to be 

 followed under the law are pointed out. 



FOODS— ANIMAL PRODUCTION. 



On the relative digestibility of white and brown [whole wheat] 

 bread, T. L. Brunton and F. W. Tunnicliffe (St. Bartholomew's 

 Hospital Bpts.y33 (1807), pp. 157-168).— The authors report an extended 



