By. 3e- 
Grape phylloxere a grape-romt oroblem in the Rast.--Contrary to 
usually accepted ideas as to injury by the grape phylloxera in the 
eastern part of the United States, Phylioxera vitifoliae Fitch has 
been found causing serious injury to the roots of grapevines in the 
variety planting maintained by the Bureau of Plant Industry 2 Ar. 
lington Farm (P. 0., Ros siyn), Va. In order to cbtain detailed ine 
formation as to varictal susceptibility under eastern conditions, 
G. A. Runner, in charge of ‘She Bureau's grape-insect work at San- 
dusky, Ohio, spent about 3 weeks in October and Novemver making a 
careful examination of the roots cf. nearly 300 varieties of grapes. 
Many instances were found in which the accepted ideas of varietal 
susceptibility did not hold. Another interesting SPECS SRE has 
ae the absence of leaf gulls, which are usually more abundant in 
the East than are root injuries. Further study of this interesting 
Situation is contemplated. 
Efficiency of oi] avainst codling 1 eges of different ages.—- 
Ras ts ~ Sazame, in charge of the Vi eee aaa laboratory, reports 
results cf experinents which indicate that the efficiency cf oil as 
an ovicide: for the codling n wtb varies with the. age of the eggs. In 
the experiments the eggs were most susceptible to an 0.5 percent sunm- 
mer oil emulsion when they were in the "red-ring stage," i.e., 3 days 
old, under normal high summer tenperatures. His results ars summar-. 
ized as follows: 



‘Age of eres when surayed Begs hatched 
huriver Percent 
RE ilar evils)’ ¢, 0 ick: saps etiial 1.0 Ree eet lee 6,698 24.4 
Ry (yin. sat ae dew: Fukscue Faldd: asi iat PACs aba beans 7,689 rata ya 
Pires deys, (rodering -9tage). dja lin ei cote .* py aoe. 10.7 
moundays (black—spot. stage) (iii deles uel asian ven ae] 
eee TSM 4 8. '.) 6 ue bee cere Oa Gkee we 6,277 G34 

JAPANESE AND ASTaTIC BEETLES 
Incidence of larval disease.--H. Fox and T. N. Dobbins, licores- 
town, N. J., report that the relative pro ortion of dead Ang obvicus- 
ly diseased larvae of the Japanese beetle (Popiliia japonica New.) 
found during the Novenber surveys is less than that in the preceding 
fall months. This situation is believed duc tu decreasing soil ten- 
perature, which inhibited biotic ectivity. 
Effect of various stickers on the adhesion vf lead arsenate to 
foliage.--Tests oy F. W. Metzger and L. Koblitsky , Moorestown, dur- 
ing the past summer hava shown that flour and fish oil are of an- 
