ENTOMOLOGY. 1067 



In an appendix to the bulletin E. L. Smith and J. D. Ohvell ^ive the results of 

 insecticide work in their orchards. For a part of this i)ractical work arsenite of 

 soda was used, wliilc on other trees a mixture of Paris green and l..iiid()ii purple was 

 applied. Both of these orchardists have fotnid it possible to prevent to a large 

 extent the injury of the codling Tnoth and therefore )>i'iieve that spraying for this 

 purpose is profital)ie. It is stated that niucii of tlieir success has d('j)ended ujion 

 spraying during the first or second week in September. 



The periodical cicada in 1902, W. I). IIuntek ( T. S. Dejit. Ayr., Dirlsiim of 

 Entontuhxjii Ciir. /,-}, u. scr., j)j). 4, ji</x- ~^) • — The circular calls attention to the fact 

 that brood No. X was due to appear during IMay in 1 7 or more States as well as in the 

 District of Columbia. The usual reconnueudation is made not to trim fruit trees too 

 closely during the spring; and a request is made for volmitary reports from various 

 localities in which the cicada appears. 



Insect enemies of forests and forest products, A. I). Hopkins (Foreater,? 

 {1901), Xo. JO, pp. J50-:<!54, Jiga. 5). — Popular notes on insects injurious to forest trees 

 and lumber, with special reference to the species which attack coniferous trees. 

 Attention is called to the desirability of further experiments for devising practical 

 plans for combating the attacks of forest insects. 



Insects injurious to elm trees, E. P. Felt ( New York State Fi.^lierie.'f, Game and 

 Forent Con. Upt. 16'H!), pp. 351-379, pis. 3, figs. 7). — Notes are given on various 

 mechanical and chemical methods for destroying insects. An account is given of the 

 life Uistory, habits, and means of combating elm-leaf beetle, bagworm.fall webworm, 

 antiopa butterfly, elm borer, and elm bark-louse. 



The protection of fruit trees against animal enemies, O. Taschenbekg [Schutz 

 der ()l)Slli(iinne gegni. feliidlicln' Ticre. Sliittgarl: E. Vltnin; 1901, pp. 341, figs. 75). — 

 This volume constitutes one part of the author's treatise on insect and fungus enemies 

 of fruit trees. In the introduction a general account is given of the anatomy and 

 classilicati(m of insects, and of the various physical, mechanical, and chemical means 

 which have been adopted for destroying insect pests upon fruit trees. Especial atten- 

 tion is given to those insecticide methods which are best suited for preventing injuries 

 from insects to the roots, trunk, buds, flowers, leaves, and fruits of various fruit 

 trees. The more common injurious insects are mentioned and economic and biological 

 notes are given on eacli species thus discussed. 



Lantern traps and the destruction of injurious insects, V. Vermokkl (L<'s 

 pihjes lumineux et la destruction dcs inseeles nuisibles. Muntpdlier: Coulel S: Son, 1 Oi, 

 pp. 64, figs. 31). — The author gives a general historical account of the various uses to 

 which the lantern traps have been put in collecting and destroying insects. \ large 

 number of different styles of traps are described and illustrated. \ l»il)hograpliy of 

 the subject is given and a list of economic plants is presented in connection with the 

 most important injurious insects which affect each plant. Experiments have shown 

 that a large variety of insects may be captured in this manner, but lantern traps are 

 especially e£fe(;tive in attracting butterflies and moths. A calendar is presi'uted 

 showing the most important injurious insects which appear during different i)eriods 

 of the year and which may l)e caught by means of lantern traps. 



Fumigation methods, \V. (J. Joh.vson (Neif York: Orange Jndd Co., 190^, pp. 

 313, figs. 83). — In this volume the author gives a general account of the use of 

 hydrocyanic-acid gas and carbon bisulphid in fumigating various kinds of orchard 

 trees, nursery stock, and other i)lants, under various couditiims. The voMnne 

 includes a history of the discovery of the value of this gas for iiisecticitle purposes, 

 the method of generating the gas, physiological effects on plants, effects on animal 

 life, the apparatus suitable for use in orchards, cost of the application, ecpupment for 

 fumigating nursery stock, construction of ventilators and floors, metliods ol fumi- 

 gating in greenhouses and cold frames, api)lication in mills, elevators, and other 

 buildings, fumigation of grains and other seeds, the diffusion of gas in the air, the 



