ECONOMTC ZOOT.OGY ENTOMOLOGY. 1063 



.(11(1 tho beetles destroyed. The foliajtce of elui trees should be sprayed with an 

 arseiiieal as soon as the work of the beetle in the spring can be detected, and 

 later in the season the pupie may be destroyed by spraying; with kerosene 

 emulsion when they collect on the trunk of the trees or in the soil at the base. 



The use of sticky bands in combating Lasiocampa pini {Dent. Landw. 

 J'rcssc, 3Jf {1907), A'o. 11, p. 79, fujs. 10). — A brief description is given in con- 

 nection with illustrations showing a method for applying sticky bands about 

 trees in a rai)id and effective manner. 



Spraying calendar, S. A. Hkacii v.t au (loicd Sid. Bill. S!l, pii. .>'/, /i(/.^. ,'>). — 

 Directions are presented for methods of controlling the common insects and 

 fungus diseases which injure orchard, garden, and field crops. Reconunenda- 

 tions are made regarding tlie time and method of apiilicatioa of the remedies, 

 and I'ornuilas for their i)reparation are given. 



Insecticides and fungicides, L. F. Henderson {Idaho Sta. Spec. Bui., 1907, 

 pp. ^i).^This is a popular compilation of formuljB and recommendations for 

 the preparation and application of the standard insecticides and fungicides. 



The danger from the use of arsenic in agricultural practice, II. Bertin- 

 SANS and V. Ros {Rev. Hyy. et Pol. Saiiit.. 29 {1907). Vo. .1. pp. 1U.i-.il7).— 

 There appears to be no means by which the attacks of leaf-eating insects may 

 l)e so successfully controlled as by the use of the well-known arsenical insecti- 

 cides. The necessity of using these insecticides is, therefore, recognized despite 

 the fact that some danger attaches to their use except under proiter pi'ecautions. 

 After a thorough study of the possible dangers connected with the use of arsen- 

 icals the authors propose a set of regulations which they believe will, in large 

 part, obviate these dangers. 



It is recommended that the use of ar.senate of lead for the destruction of 

 insects be prohibited, and that other arsenical compounds siiould not be sold 

 except after being colored in such a manner that they can not jKJSsibly l)e con- 

 fused with any food, condiment, or substance used in the manufacture of wine. 

 The buyer and seller are both to be held equally responsible for this denatura- 

 tion of the arsenical, and the insecticides are to be sold in packages [>lainly 

 marked "poison." It is also to be required that dealers shall make monthly 

 rei)orts of the amount of ar.senicals sold to their customers together with their 

 names and addresses. Treatments of vineyards with ar.senical compounds are 

 not to be authorized except during the first part of the year, and such applica- 

 tions are to be prohibited after the grapes are in bloom. It is also recommended 

 that the public be warned of the danger of eating snails and slugs found in 

 vineyards sprayed with arsenicals. 



The Rex spray and other lime and sulphur compounds, I.. F. Henderson 

 [hlnhit Std. Hill. ■')(>. lip. l.i). — A comparative test was made of various forms of 

 lime and suli)hur including a proprietary mixture, one recommended liy (\ V. 

 IMl)er, and the one comnioidy known as the California mixture. .Ml <if these 

 mixtures proved exceedingly effective in the destructicm of San .lose scale and 

 apiKirently their effectiveness was about equal. The matter of the relative cost 

 of the different forms of lime and suli)hur can be determined only by repetition 

 of the exi)eriments. but it appears that the proi)rietary form in this case was 

 not more expensive tii.iii homeiiiade mixtures when time and labor were esti- 

 mated !it ordinary iirii'cs. 



Observations on mosquitoes, P.. (iAi.Li-VALERio and .1. Rochaz-de .Ioncii 

 (Cruthl. lidkl. \<>r.\. I. Mit., OrUj., J/S (1907), No. '>. pp. '/f;.S-',77. fi(/. /).— As a 

 result of their study <>{' mosquitoes, the authors believe that a considerable per- 

 centage nf the moS(iuitoes which first ajipear in si)ring come from hiliernating 

 larva- and eggs. Numerous obsei'vations were made on the trans])ortation of 

 mosquitoes by wind and on tlic various jiarasites to which they are subject. 



