—e 34 — 
INSECT (PEST SURVEY AND LS RELATIONS 
During September oe October the literature was reviewed for Insect 
Pest Survey records, . including distribution; food plants, parasites, rel- 
ative importance, and brief life history of 23 species-of insects, and 
the notes were. added to the permanent record files of the survey. This - 
brings the number of insects upon which. reviews have been,made up to 168. 
The survey file now contains notes on 18,000.species of North American . 
insects of more or less economic importance; and also contains: notes on 
10,000 species which are pests in other countries but have not been dis~ 
covered in this country. 
A program of 100 entomological subjects for radio broadcasting dur- 
ing 1934 was completed during the month. 
In September, M. P. Jones,’ subject matter specialist for the North- 
ern States, made a fall trip in the northeastern part of the.United States, 
following up work projected earlier in the season, and discussing. PAT ian 
Club work. While on the trip he took charge of the Department's exhibit 
‘at The Rochester Exposition. - The Bureau's unit on peach borer control 
attracted much favorable’.comment. He left Washington the latter -part of 
October to assist the State extension forces in organizing a campaign for 
chinch bug control in the Central States. 
PHYSIOLOGY AND TOXICOLOGY OF INSECTS 
M. C. Swingle has gone to Sanford, Fla., where he will spend about -. 
6 months in a study'ef the toxicology of various nicotine preparations, © 
He will be assisted by J. F. Cooper, who was formerly stationed at Cor-. 
nelia, Ga., in the Division of Fruit-.and Shade Tree Insects. This is one 
of the four projects being started by the Bureau under special Sree s 
from the Tobecco: Section of the A.A.A. 3 
alte . ; 
ee Ws eenpeer iis now rapelvine efEes of Florida mosquitoes from %, ve 
King, of Orlando, Fla. Dr. Bulger will use mosquito larvae during the 
winter to study the value of various antioxidants and dyes in retarding 
the photochemical decomposition of rotenone. 
F. L. Campbell and W. N. Sullivan are making a survey of the insec~ 
ticidal value of kerosene extracts of various species and samples of 
Cracca native to this country. Only one of 9 samples so far studied has 
shown any promise. This was a sample of roots of Cracca latidens from 
Florida. It was not so effective as a sample of derris. 
