64 EXPERIMENT STATION EECORD. 



as tarred paper. Quite extensive experiments were carried on with 

 wire cao'es placed aV)()ut the trees, and it was found that although this 

 method seemed promising from a theoretical standpoint, it proved 

 useless in its practical application. An asafoetida and aloes wash was 

 applied to some of the trees for the purpose of determining whether 

 oti'ensive-smelling substances had any efi'ect in deterring the adult 

 insects from laying their eggs upon the trees. The results were 

 negative. Various soap washes, whitewash, and lime-sulphur-salt 

 wash proved to be practically ineffective, as did also hydraulic cement 

 wash. The Paris green and glue wash killed the trees within a few 

 weeks. With regard to the digging-out method, the author states 

 that this is the "only thoroughly successful and safe way of killing 

 the peach-tree borer." He recommends, however, that it be com- 

 bined with one or another of the methods classified as efi'eetive, the 

 particular combination to be made depending on the special circum- 

 stances of each case. 



An extended bibliograph}^ is given of the peach-tree borer from 

 1749 to the present time. 



Preliminary report on the insect enemies of forests in the 

 North-west, A. D. Hopkins {U. S. Dept. Agr.^ Division of Entomol- 

 ogy Bui. 2U n- se?\, pp. 27). — This preliminary bulletin contains a 

 detailed itinerary of a trip by the author through the Northwest and 

 a general account of observations made upon this trip. Especial 

 attention was given to the study of the Scolytid enemies of forests of 

 the Northwest. Among the trees of which the insect enemies were 

 studied, the following may be mentioned: Redwood, western yellow 

 pine, sugar pine, silver pine, red fir, tideland spruce, red cedar, west- 

 ern hemlock, lowland fir, noble fir, and western larch. 



Popular notes are given on the infiuence of farming methods and 

 lumbering methods upon forests and upon the relation of forest fires 

 to depredations by insects. Brief notes are also presented upon the 

 relation of insect enemies of trees to forest fires, the relation of the 

 diseases of trees to insect enemies, and the interrelations of forest 

 fires, insects, and fungus diseases. 



Among forest insects of the Northwest which are considered of the 

 greatest economic importance, the following may be mentioned: 

 Dendroctoiius h'revicornis., D. ahnilis., Scolytiis prwcej^s, Melaiiopldla 

 drumniondi, and Neophasia menapia. 



Paris green for the codling moth, C. W. Woodworth and G. E. 

 Colby {California iSta. Bui. IJV.pp. JtO,jigs. 2). — During the past 3 

 or 4 years complaints have been made of the uncertain results 

 obtained from spraying with Paris green. A circular letter was sent 

 to entomologists and editors of agricultural newspapers for the pur- 

 pose of obtaining statistics upon the question of the quality of Paris 

 green. The answers to this circulai' letter indicated that in some cases 



