m= ha 
Anthony Musgrave, author of Bibliography of Australian Entomology — 
§Published by the Royal Zoological Society of New South Wales, 1932), 
was a visitor in Washington on April el, spending some time with the 
taxonomists in ies Day +eton: of Insects, | 
PHYSIOLOGY AND TOKICOLOGY OF INSECTS a 
F, L, Campbell and W. N. Sullivan, Takoma Park, Mc., completed 
an extensive series of tests against house flies, using acetone ex- 
tracts of rotenone-hbearing plants. The volume of extract, or its 
equivalent in weight of plant materials, required to kill 50 percent 
of the flies was determined. This measure of effectiveness was fairly 
well correlated with the methoxyl content of the plant materials, as 
determined by H. A. Jones, of the Insecticide Division of the Bureau 
of Chemistry and Soils. This is a further indication that methoxyl 
content or total acetone extractives may be a better index of insec- 
ticidal value than is rotenone content. 
J. W. Bulger, Takoma Park, and M, ©. Swingle, Sanford, Fla., 
made preliminary tests of phenothiazine as a stomach poison against 
lepidopterous larvae. his substance appears promising as compared 
with lead arsenate. Phenothiazine was prepared by L. E..Smith, of 
the Insecticide Division, and was first tested by J. W. Bulger against 
culicine mosquito larvae, to which it was more toxic than was rotenone, 
PLANT DISEASE ERADICATION AND CONTROL 
Blister rust control (NIRA program).--The winter field activities 
on blister rust control under NIRA funds in the Northeastern and Lake 
States was confined chiefly to mapping of pine and control areas in 
preparation for this season's erork'in' eradizatioiniof Ribes., The area 
mapped in the Northeastern States, including white. pine and protection 
zones, during this period totals 288,963 acres and was performed with 
an expenditure of about 12,000 man-hours of labor, In the Lake States 
171,334 acres of white pine were located and mapped in preparation 
for Ribes eradication. In addition to performing their regular educa- 
tional and service activities, the permanent blister rust control per-— 
sounel assigned to the NIRA program supervised the work of CWA laborers 
on State blister rust control projects in seven of the cooperating 
States and blister rust pre-cradication surveys undertaken by some of 
the ECW camps. 
In the West a very important accomplishment under the NIRA pro- 
gram for the Inland Empire was the pre~eradication survey during the 
fall of 1933. Following completion of Ribes eradication activities 
on the various forest aréas, about 90 men were employed from NIRA 
funds for an average period of approximately 1 month on this survey. 
Divided into le parties under the supervision of permanent personnel 
from the Office of Blister Rust Control and from the Forest Service, 
these men operated in rortheastern Washington, nordwern Idaho, and 
northwestern Montana, About 1,200,000 acres were surveyed but had 
the weather been favorable, approximately 2,000,000 acres of forest 
land supporting the most valuable stands of white pine in the Inland 
