ee Be 
ever observed by the writer there is a distinct foliage injury on the 
plats treated with nicotine sulphate, 1 to 400, and on all arsenical 
and fluosilicate plats on which this material at the same rate was ap— 
plied with the arsenical or fluosilicate. The injury appears as a whit— 
ening or bleaching of the green coloring matter of the leaves and ap— 
pears to extend from the margin toward the center of the leaf. This 
injury does not appear on adjacent check plats or on the plats treated 
with arsenicals or fluosilicates to which nicotine sulphate had not been 
added. The cause of this is not known, as it did not appear on beans 
treated with this material earlier in the season or in former seasons." 
Emergence of Mexican bean beetle in New Mexico.--J. R. Douglass, 
Estancia, N. Mex., reports that "There were two peaks of intensive emer— 
gence from hibernation, the first on June 19 and the second on June 23. 
Precipitation stimulated the beetles to emerge on those dates. The most 
intensive emergence occurred on June 23, when 2,534 beetles emerged in 
cages in the western yellow pine forest zone." 
Narcissus bulb nematode survives hot-water treatment.--F. J. 
Spruijt, Babylon, N. Y., reports that from examination in the laboratory 
of "potted samples of last season's vapor heat and hot water treated 
bulbs * * * it seems clear that live Tylenchus may pass through aves 
por heat treatment of 115° F. for 5 hours. A similar result was s0pee 
tained in last September examinations. It came as a Surprise to find 
a survival of about '70 specimens in the sample of the hot water treat— 
igineror rLLO° “for 5 “hours. In the September examination, the records 
showed numerous dead Tylenchus and the later results point to the pos— 
Sibility of eggs passing through as high a temperature range as given 
and remaining viable." 
Sand wireworm has l-year cycle.—-"'The l-year life cycle for 
ing to E. W. Howe, Fairfax, S.C. "A total of 25 records of completion 
of the larval stage have been obtained and practically all the remain— 
der of surviving larvae (of reared material) have reached a size where 
pupation this season can be safely anticipated." 
Rotenone repels but does not kill larvae of celery leaf tier.—— 
C. B. Wisecup, Sanford, Fla., reports: "Previous experiments with rote— 
Cram.) indicated that no appreciable kill could be obtained but there 
appeared to be a decided repellent effect. One experiment was conducted 
in June to obtain further information on this point. Recently hatched 
larvae of the celery leaf tier (Phlyctaenia rubigalis Guen.) were used 
and a proprietary cube extract 1 to 200, derris extract 1 to 200, and 
derris extract 1 to 600 were tested against lead arsenate 2 pounds per 
100 gallons of water. Almost no kill was obtained except with the lead 
arsenate, which was 100 percent effective. Approximately 50 percent of 
the larvae left the foliage treated with the rotenone products and the 
