ENTOMOLOGY. 989 



Lime, sulphur, and salt wash, C. T.. Marl.vit {U. S. Dept. Agr., Dividon of 

 Entomoloijij Cirr. 52, 2. ser., pp. S).—On account of the recent experiments which 

 have shown the effectiveness of this insecticide in Eastern States, the author pre- 

 pared a brief account of the history of this inseciticide, its effect upon scale insects, 

 and the method of prei)arin<j^ and applyinj; it. 



The result of applying crude petroleum to peach trees in Ohio to suppress 

 the San Jose scale, F. ^l. Wkhster {I'roc Sac. Prom. Aijr. Sri. /fwj, j,j,. ii'j-140, 

 j>h. 4)-—^- controversial article concerning tlie value of this insecticide, with spet;ial 

 reference to the possible danger from its application. Instances are noted from 

 experiments in Ohio in which great damage was done to peach and other trees. 



Crude petroleum as an insecticide, E. P. Felt {Proc. Soc. Prom. Ayr. Sci. 1902, 

 pp. S6-.'/.5).—The results obtained from the experiments of various entomologists 

 with this insecticide are briefly discussed and a number of conclusions are drawn 

 from the results thus far obtained. The effect of crude petroleum and the compara- 

 tive safety in using it have been estimated (luite freciuently ])y diffcn-nt investigators. 

 A brief bibliography of the subject is added to the article. 



Insecticides for use in Hawaii, D. L. Van Dine {Ilaira'd Sla. Bui. 3, pp. 25, 

 ti(jf!. 7). — A short general account of the application of insecticides, spraying ai)pa- 

 ratus, and a discussion of the formulas and means of preparing tlie common insecti- 

 cides of various sorts, such as Paris green, arsenate of lead, soda arsenite of lime, 

 pyrethrum, hellebore, arsenic-and-bran mash, kerosene euiulsion, \\ lialc-oil soap, 

 resin wash, carbon l)isulphid, and liydrocyanic-acid gas. 



Liquid and dust spraying, J. C. Evans et al. { Missouri Stale J f(n-t. Sor. Jipt. 1U02, 

 pp. 215-228). — A num])er of points connected with the comparative value (jf li(juid 

 and dust sprays were discussed l)y different speakers. The insect which was chiefly 

 considered in this discussion was codling moth. 



Spray calendar, F. H. Blodgeit and T. P). Sv.mons {P^pL .Udri/ldud Slad' llorl. 

 Soc, 5 {1902), pp. 156-163). — Directions are given with regard to the more important 

 insecticide and fungicide operations required during the different months of the year. 

 The chief insect and fungus pests are briefly mentioned, witli fonnulas for insecti- 

 cides and fungicides. 



A practical means of destroying cockroaches, C. Chalot {Jour. Agr. Prat. 

 I'aijs Chauils, 2 {1903), No. 10, pp. 503, 504). — lu combating Peripkmeta americana 

 the author had best success from trapping the insects in glass vessels containing a 

 small quantity of olive oil and being inclined at an oblique angle so as to make it 

 possible for the cockroaches to enter the neck of the vessels. 



The culture of the mulberry silkworm, Henrietta A. Keli.v {U. S. Dcpt. Agr., 

 iJu'lsion of Enlomolo(jii />'"/. 3!), n. ser., pp. 32, figs. 15). — This bulletin constitutes a 

 brief handbook of information regarding the various processes and manipulations of 

 sericulture. The information was obtained by travels and observations in Italy and 

 France, and by practical experience under sericulturists in these countries. The 

 subjects discussed include the life history of the silkworm, the food plants, instru- 

 ments necessary for use in silkworm culture, hatching of the eggs, rearing of silk- 

 worms, preparations for spinning, preparing the cocoons for market, and the diseases 

 of silkworms. 



Silkworm culture, Henrietta A. Kelev ( V. S. Ikpt. Agr., Phniwrs' Bui. 165, pji. 

 32, figs. 16).— \ rei)rint of Bulletin ;^9, Division of I<]ntomology, with the addition of 

 a few paragraphs relative to the culture of the mulberry (ncjted above). 



Pebrine and related microsporidia, A. Lutz and A. Bplendoke {('ciilbl. Bold. 

 a. Par., 1. AbL, 33 {1903), No. 2, Orig., x>P- 150-167, fig. i).— Notes are given on 

 the various species of Nosema which occur in silkworms and other insects. A list is 

 presented of the various insects and fish in which these organisms are found and a 

 brief synoptical table is given for identification of the species of Nosema. 



