etG Ps 
J. M. Miller reports that a cooperative project has been arranged 
with the California Forest Experiment Station for a series of studies on 
the relation of the vigor of the pine trees to the nature of the resins 
and terpenes secreted by them, and the degree of attractiveness of the 
jatter for the western pine beetle. N. C. Tihomiroff, a chemist special- 
izing on resins and terpenes, has been assigned to the California Forest 
Experiment Station and will cooperate in this study with H. L. Person, 
of this Bureau. 
Plans have just been completed for a cooperative study of logs 
in the process of becoming lumber, conducted by the Forest Products 
Laboratory of the Forest Service, the Bureau of Plant Industry, the 
Bureau of Entomology, and local timber operators in the Appalachian 
Mountains. The object of this study will be to follow the logs from the 
time they are felled until the lumber is finally graded, and determine 
the amount of defect and cull caused by various insects and diseases. 
The work will be begun about June 1 and continue through August. R. A. 
st George will be detailed to this project during the greater part of 
the summer. 
William Middleton was in Philadelphia April 6, 7, and 8, review-— 
ing the control work on the boxwood leaf miner. 
COTTON-INSECT INVESTIGATIONS 
B. R, Coad, Entomologist, in Charge 
G. F. Moznette, in charge of pecan insect investigations, and 
J. B. Demaree, conducting pecan-disease investigations in the Bureau of 
Plant Industry, spent several days in the middle of April at Tallulah 
assisting in preliminary tests of distribution of pecan insecticides and 
fungicides from airplanes. Plans have been perfected by which the Bureau 
cotton—dusting planes will make a series of experimental applications on 
pecan trees near Albany, Ga., during the coming summer, in cooperation 
with these gentlemen. 
On April 30 Elmer Johnson and R. L. Mitchell left Tallulah for 
Albany, Ga., by plane, to arrange suitable landing fields and other 
facilities for this work at that place. 
F. C. Bishopp spent April 30 at Tallulah in conference with Mr. 
Coad and others. 
F. F. Bibby and W. L. Owen, of the Texas State Experiment Sta- 
tion, have reported for duty at the Cooperative Pink Bollworm Laboratory 
at Presidio, Tex. 
