~ 29 yg. 
Mr. Wagner also reports the successful:-treatment of 27,000 bushels 
of wheat with 300-pounds of calcium cyanide. This was 2-year-—old wheat 
and was badly infested with the rice weevil, the lesser grain borer, and 
the sawtoothed.grain beetle. ‘The Seta eter ney of the wheat, which was. 
between 95° and 100° F, before treatment,” returned to normal efter the 
fumigation. ur 
Tom Brindley, sf the Moscow, Idaho, leboratory, reports, among other 
things, that weighings of field peas,.started when the seeds were ripe 
enough to thresh by hand, show that weevil development causes a loss in 
weight averaging between 18.3 and 22.2 percent. Samples of pea vines 
and threshed peas, from plots dusted during the past summer with calcium 
arsenate, showed a residue of 0.124 and: 6,011 grain of AsoOz pound, rex 
spectively. According to Dr. Gildoe of the Veterinary Department of the 
University of Idaho, the residue on the vines would not be dangergus: to. 
cattle, but the residue on the threshed peas exceeds that permitted by”! 
the pure food laws. Mr. Magnuson, of the Department of Agricultural 
Chemistry of the University of Idaho, directed Mr. Brindley in making © 
the above determinations of arsenic residue, 
A. O. Larson naa G.. Hinman of the Corvallis, Oreg., laboratory, 
placed a series of hibernation cages in October at Union, Pendleton, 
vo... Moro, Hood River, Hermiston, Redmond, Burns, Talent, Coquille, Corvalli 5 
Astoria, Forest Grove, and Barlow. last winter all pea weevils exposed 
to temperatures of -6° F,, or lower, failed to survive the winter ox’ 
cept where protected by snow or other covering. The weevils in“the cages | 
placed at the above mentioned places in Washington, Oregon, and Idaho axe’ > 
given varying degrees of protection with the hope that the. results will” 
be of value, 
In his October report, Perez Simmons, of the Fresno Laboratory, 
gives the results of fumigations conducted by D. F. Barnes and C. XK, 
Fisher, of freshly gathered figs with various fumigants, In all, 38 
fumigemions were conducted in especially devised fumigéting boxes, each 
of 32 cubic feet capacity, and containing about 100 pounds of figs, ar- 
ranged on screens. The temperature ranged Between 82° F, and 118 oa: 
amd with minor exceptions the mortality was complete. A study of the 
insects killed indicated that about 98% percent were Carpophilus, 1 per- 
cent Ephestia, and 1/2 to 1 percent miscellaneous. 
On the nights of October 11, 12, 13, and 14, H. C. Donohoe operated 
a pale blue trap with Sic wires spaced 1/2 inch apart on cen- 
ters, and a dark blue trap with wires 3/8-inch apart on centers. The 
traps were suspended between stacks of trays of figs in the drying yard 
at the Markarian ranch near Fresno. While the dark blue light was about 
twice as attractive as the pale blue light to the raisin moth and caught 
1 2/3 as many noctuids, both traps were rather inefficient so far as the 
electrocuting feature was concerned, 
