ao ew cy 
Js Ge Evenden, of the Coeur dfAlene, Idaho, field station, reports that; 
"Research studies of the Cceur d?Alene Forest Insect Station concerning 
Dendroctonus monticolae infestations in western white’ pine will be carried on 
in the Coeur d'Alene National Forest. There are approximately 269,160 A. 
white pine type, or 1,500,900 M,bef. white pine in this forest which is 
35 per cent of the ertire stand. The entiré whité pine type.will be covered 
each ysoar'by a very extensive reconnaissance, to determine the character 
and oxtenc of the general infestation, Research work will be conducted. with= 
ina tract of 9,CO0 acres of white pine type on the headwaters of Independence 
Creek, This tract has been secured from the Forest Service for a perlod ofy 
five years as an experimental area, The location is well adapted to this 
study as it is practically surrounded by large burned areas, which gives an 
isolation from outside conditions and factorse The infestation is now at a 
very low stage, but in the past,few years a large volume of white pine has 
been kitled by Dendroctonus monticolaes asks | | 
"The poirtswhich will be covared in the research work ‘are as follows; 
les To determine the importance from an economic viewpoint of the 
depredations by Dendroctonus beetles in the forests of northern Idaho. 
ae~ The cause, character, and period of time relative to the intermittent. 
increase and decrease in the annual infestations’ 1 a 
3e= Studies of seasonal history, conditions influencing rate of mortality,. 
factors which induce beetles to attack certain individuals of their host 
species, flight habits, and the relation of forest fires to subsequent 
insect attack, These studies are to be carried on in conjunction with 
Dre Hopkins's investigation of the bioclimatic law. Investigations will 
also be made for possible and practical control measures, (he alle 
4y=- To investigate secondary insects, and barkbeetles of minor importance,” 
with the character and extent of damage involved, as well as the relation 
of these insects to the primary species," |. pk ae 
Dre Fy Cs. Craighsad of this branch of the Bureau left Washington on July.20 
for Kanawha Station) We Vae, for an investigation of Prionus root-borers in oaks. 

SOUTHERN FIELD CROP INSECT INVESTIGATIONS 
Je L.. Webb, Ent omologist: Acting in Charge 
The following appointments have been made: Cotton=-boll weevil investigations, 
Tallulah, Lae, permanent -~ EF. Rs Bibby, Ms Re Smith, and Joseph C.e Woolley; } q 
temporary = Geos We Alexander, Sidney N. Boyd, Andrew Je Chapman, Joseph Grister, 
Be Ms Deavenport, Glyde Dunn, J, Ae Harris,-Re T. Hobson, Thos. H, Holland, 
J. W. Hollandsworth, Blmer Ee Holley, Js As Humphries, Ay J. Mattox, a f 
Ae G, McCarty, Le Ge Plyer, Wm. Da- Reed, Arthur Shaver, Wie R, Smith, We Ae ‘ 
Stevenson, Adolph Thomas, We Be Vinzant, Re Le White, V. Ve Willians, ...) ee yi 
Madison, Fla,, laboratory, temporary = Ws. We Alexander, Paul Calhoun. . Jone 
Tokecco Insect inveszigations, Clarksville, Tennj, temporary - L. N, Judah, 
Jy T. Lewis jr., Scott Cc, Lyon, Mae. Ls MacQueen, Te Pe Weakleye eine 
Sugar-Gane Insect Investigations,.New Orleans) La., temporary = Wallace © 
TZ 
Ee Haley; Brownsville, Texe, laccratory =. Le Re Ts Cowen, res 4 
Miscellaneous ansect, Investigations, Mound, Las, temporary,= Chase Gaylord Van 
Dine; re Pe ; BarE: dT Ie’ ie pe 
Everett Ey Wehr of the Dallas, Texs, laboratory, conducting investigations 
of insects affecting health of animals, resigned June 30, for the purpose of 
reentering college, 

