ap Se 
moth (Sitotroga cerealella Oliv.) used in the rearing of the parasite 
Trichogramma minutum Riley. They report as follows: "Early in January 
an automatic system of moth collection, similar to that used in Canada 
by Mr. Baird, has been tested in this laboratory, with surprisingly good 
results. In the four corners of the flat metal tops of our cabinets we 
cut circular holes and over these holes soldered large tin funnels, with 
the spouts pointing up. For collecting over these funnels, tin coffee 
cans were fitted with similar funnels in the lids and with screen-wire 
bottoms. These trap cans were inverted so the funnels on the tops of 
the cans fitted over the funnels on the unit (cabinet) top. Regular col- 
lections once a day yielded more moths from the units than were formerly 
obtained in a single collection each day with the vacuum sweeper col- 
lector, and the moths lived and laid eggs longer, as they were not in- 
jured by suction. It is believed that by using wheat in unit cabinets 
with vertical trays, and with automatic collectors as described above, 
the cost of rearing Sitotroga and Trichogramma will be reduced to an 
astonishingly low figure." ; 
Bands catch large percent of codling moth larvae.—-Fred P. Dean of 
the Yakima, Wash., laboratory, reports: "In order to find out the per— 
centage of the larvae that have left the apples by harvest and are caught 
in beta naphthol treated bands, 7 Jonathan and 8 Winesap trees were banded 
early in the season. All the apples from each tree, including the dropped 
fruit, were carefully examined and the number of worms that had left the 
apples was recorded and checked against the number of worms found in the 
bands. Of 730 worms that had left the fruit on Jonathan trees 62 percent 
were caught in the bands, whereas of 231 worms from the Winesaps 88 per— 
cent were caught, the average for the two varieties being 68 percent. 
Similar banding tests in 1931 resulted in catches of 32 percent for the 
Jonathans, 37 percent for the Winesaps, and an average of 355 percent 
for both. The higher percentages obtained in 1932 may have been caused 
by the owner's failure to remove wormy apples from the orchard." 
Fermenting baits most attractive to oriental fruit moths.——In sum— 
marizing a detailed report on the relation of fermentation to attract— 
iveness of bait traps to the oriental fruit moth (Grapholitha molesta 
Busck), W. P. Yetter and L. F. Steiner, of the Cornelia, Ga., laboratory, 
state: "The records show that in most baits there is a correlation between 
fermentation and attractiveness, with the latter increasing or decreas— 
ing as the rate of fermentation increases or declines. Efficiency is 
affected not so much by the total fermentation as by the presence or ab— 
sence of it. As fermentation and degree of attractiveness are not uni- 
form at all ages, it appears that if a single bait is to be used commer— 
Cially it must be maintained at two ages throughout the orchard for best 
results." 
Sulphur residue toxic to newly hatched purple scale.—-R. L. Miller 
and Mrs. Ione Pope Bassett, Orlando, Fla., report as follows: "On October 
29, 1932, several small nursery citrus trees were sprayed with various 
concentrations of lime-sulphur solutions. One analysis of the sulphur 
residue was made immediately after spraying and another two months later, 
when the experiment was terminated. Immediately after spraying, leaves 
