<12~ 
ends were closed by small, thin pieces of wood, and ths. cage was held 
together by 4 strong rubber band. «Food, consisting of corn-starch pel- 
_lets, was found to be very satisfactorye 
Manuscripts 
Flooding soil to control wi reworms «—~lile CG. Lane, of the Walla Walla, 
Washe, laboratory, was at the Washington, DeCe;. office from April 24 to 
project having been conducted under the direction of Mr. Lanee In this 
manuscript, the authors have presented the results of 3 years’ investiga~- 
tions-.on the possibility of controlling wireworms by flooding infested 
soile The species concerned were principally the sugar beet wireworm 
(Pheletes califobnicus Manne) and the Pacific Coast wireworm (Pheletes 
canus Lece)e Field tests on a large-scale substantiated the results 
.obtained ‘from laboratory and cage experiments in demonstrating. the prac~ 
ticability of flooding as 4 control measure under the conditions en-~ 
countered in certain of the irrigated districts in the State of Washing=- 
tone . From 95 to 100 percent of the wireworms involved were killed in 
1 week as a result of flooding the soil while the mean soil temperature 
was 75° F. or abovee Flooding as a control measure against wireworms 
apparently possesses possibilities when and where there are soil tempera 
tures of 75° Fe or above for a period of a few dayse This manuscript 
will be presented for. approval by the Burcave | - Very few references rew 
lating to submergence in water as 4 control measure against wireworms 
have been found in the literature. Sieh 
& study of wireworm populetions.--Mr. Lene.and E. We Jones, Walla 
Walla, have submitted a manuscript entitled, A Study of Vvireworm Popula» 
tions, presenting results of a rather difficult study which had for its 
objective the determination of the size of the unit area and the number 
of units necessary to constitute an adequate samplé. These two precede 
lems. are discussed with special application to their utility in measure 
ing the. results of control operations in the field,as well as for ade 
vising other workers as to the methods used in connection with wireworm 
problemse-De Je Ce 
a 5 bey CHREAL AND. FORAGE INSECTS, . 
Grasshopper control campaign.--A report from Be Me Gaddis indicates 
that the extensive grasshopper control campaign being. carried on under 
the direction of J. kK. Parker in the Northern Creat Plains States, by the 
Bureau, in cooperation with the States, is well under waye . A mill~« 
mixed bait consisting of bran, sawdust, molasses, and white.arsenic is” 
sbeing used in.the heaviby infested area. The bait is being protitced at 
the rate of nearly 100 carloads a day and is being shipped to local dise 
tributing points in Wisconsin, Minnesota, North Dakote, South Dakota, 
Nebraska, lMontana, Wyoming, and:.Idaho, in accordance with estimated needs, 
based,on-a fall survey conducted cooperatively by Bureau and State Entomolo= 
gists. Hatching was becoming general by the end of the month, although 
