
fa fas 
Us Vu Schaffner, jr., and C. M. Symonds, of the Gipsy-Moth Labora-— 
tory, lelrose Highlands, Mass., visited the laboratory on August 14 to 
inspect the equipment for work on parasites. 
On August 14 Lieut. A. R. Morrison, of Mitchell Field, Long Is- 
land, who is engaged in experiments on the control of the cotton—boll 
weevil, visited the laboratory to confer with E. R. Van Leeuwen concern— 
ing arsenicals which had been used in experimental work on the Japanese 
beetle. 
ee 
FOREST INSECTS 
F. C. Craighead, in Charge 
Dr. Craighead returned about the middle of August from a trip to 
the western field laboratories of this division. 
On August 25 R. A. St. George returned to Asheville, N. C., from 
Wisdom, Mont., where for a few weeks he has been conducting studies on a 
proposed method of killing the mountain pine beetle in lodgepole pine by 
injecting po.son into the infested trees. The object sought is a less 
expensive method of controlling bark beetles. 
Dr. Ernest Bateman, Chemist at the Forest Products Laboratory, 
Madison, Wis., spent August 25 to 29, inclusive, at the field laboratory 
at Bent Creek, near Asheville, N. C., conferring with R. A. St, George 
and R. W. Caird regarding the chemicals used in a study of control of the 
southern pine beetle in shortleaf pine by injecting poison into the in— 
fested trees. 
Contributions from the Gipsy—Moth Laboratory 
Recent visitors at the Gipsy-Moth Laboratory included Dr. T. L. 
Patterson, Detroit, Mich., August 2, G. A. Smith, Massachusetts Department 
of Conservation, Boston, August 18, Dr. Alden D. Speare, Nashua, N. H., 
August 21, W. A. Baker, European Corn Borer Laboratory, Monroe, Mich., and 
Dr. H. M. Tietz, State College, Pa., August 26, L. S. McLaine, Entomolo— 
gical Branch, Canadian Department of Agriculture, Ottawa, and H. N. Worth- 
ley, State College, Pa., August 28, and E. H. Wheeler, Hobart College, 
Geneva, N. Y., August 30. 
J. V. Schaffner, jr., and C. M. Symonds, of the Gipsy-—Moth Labora- 
tory, spent August 12 to 23 on a collecting trip through parts of New Jer— 
sey, Pennsylvania, and central and western New York, the object being to 
secure information concerning the southern and western spread of the tach— 
inid parasite Compsilura_ concinnata Meig. Collections of larvae of species 
of Lepidoptera which the tachinid is known to attack were made and sent to 
the laboratory. Mr. Schaffner has made such trips each summer for several 
years, going each year into territory outside the area where the parasite 
has been recovered from collections made in previous years. 
