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JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 16 
partment and the National Park Service of the Interior Department against the 
Black Hills beetle, Dendroctonus ponderosae Hopk. 
The Department of Entomology of the Ohio Station is giving the red engine oil 
emulsion which has proven so successful in controlling severe outbreaks of San Jose 
scale in Illinois and Arkansas a thorough trial in Ohio. This season tests on apple 
are being conducted at Painesville, Youngstown and Chesapeake; on peach at 
Danbury; and on plum and currant at Waterville. 
Many arborvitae and boxwoods in the vicinity of Washington, D. C., are suffering 
from attacks by two leaf-miners—the lepidopterous arborvitae leaf-miner and the 
dipterous boxwood leaf-miner. Mr. William Middleton of the Bureau of Entomology 
is investigating these insects in this locality, particularly the infestation of the ar¬ 
borvitae leaf-miner in the Arlington National Cemetery, Arlington, Va., where it is 
especially severe. 
It is announced that Dr. F. C. Craighead has been appointed head of the Division 
of Forest Insects of the Bureau of Entomology, beginning about September 1, 1923. 
Dr. Craighead was formerly connected with the Bureau, but resigned a few years ago 
to accept a position in the Entomological Branch of the Canadian Department of 
Agriculture, where he has since been specializing in forest insect work. 
The following recent appointments to the Bureau of Entomology have been an¬ 
nounced: John F. Cotton, Cornell University, laboratory aid for the summer, 
stored-product insects; Victor Duran, truck crop pests; A. D. Shaftsbury, Bruce 
Lineburg, Paul E. Smith, Effie Marie Ross, Alary G. Rozelle, Professor L. M. Bertholf 
of the North Carolina College for Women, and B. Kurrelmeyer of Johns Hopkins 
University, temporary assistants in bee culture investigations. 
Dr. J. H. McDunnough, Chief of the Division of Systematic Entomology, Canadian 
Department of Agriculture, spent Alay 1 and 2 in Toronto, examining some of the 
type specimens of Ephemeridae in the Toronto University Aluseum. On Alay 7 he 
left for Boston, Mass., to examine types and specimens of interest in various orders 
in the collections at the Boston Aluseum of Natural History, and the Harvard 
Museum at Cambridge. 
According to the Official Record , Air. John E. Graf has been made acting head of the 
Division of Truck Crop Insect Investigations of the Bureau of Entomology. Mr. 
Graf has recently been located at Birmingham, Ala., but will now b? at Washington. 
Dr. F. H. Chittenden, who for many years has been in charge of this Division, will 
devote his time in the future to special studies of truck crop insects and to taxonomic 
work. 
The Tri-State Conference of extension workers of Alassachusetts, Rhode Island 
and Connecticut was held at Amherst, Mass., June 27-29. The following papers 
were presented before the conference by entomologists:—Apple and Thorn Skeleton- 
izer and Eur pean Red Alite, by W. E. Britton: Present Status of Gipsy Moth 
Control by A. F. Burgess: The Organization and Work of the Crop Protection 
Institute by W. C. O’Kane: Discussion of Orchard Insect Pests with Specimens, by 
Arthur I. Bourne. 
Mr. R. A. St. George of the Bureau of Entomology, left Washington Alay 20 for 
points in Kentucky, Georgia, Mississippi and Alabama, to supervise the cooperative 
experiments with lumber companies intended to prevent insect damage to green logs 
and lumber by ambrosia beetles and borers, and also damage to seasoned products by 
