
att S as 
moths of Pectinophora gossypiella emerged from the hibernation cages 
during August. The results show that the greatest survival during the 
winter of 1951-32 occurred in bolls collected from October 30 through 
November 13, whether installed at the date of collection or on December 
li. The survival of long-cycle larvae was more than four times as great 
in the bollies on the surface as in gin trash on the surface." 
INSECTS AFFECTING MAN AND ANIMALS 
Mosquitoes captured 4.75 miles from place of release.——"A total of 
1,058 mosquitoes were tested for stain in our longevity and flight-range 
experiments," reports H. H. Stage, Portland, Oreg. "Of these 306 were 
Aedes vexans Meig. and 752 Aedes aldrichi Dyar and Knab. Seven showed 
positive traces of blue stain; 6 of these were captured on August 2 and 
one on August 5, on Hayden Island. These specimens had been stained in 
a tent and released on June 11, on Sauvies Island. They were therefore 
captured 52 and 55 days later at a distance of 4 3/4 miles, airline, from 
the place where stained. At least two stretches of water, the Willamette 
and Columbia Rivers, each about one-half mile wide, had been crossed." 
White shirts less attractive to mosquitoes than colored ones.—-Mr. 
Stage also reports that "In order to determine, if possible, what effect 
different colors would have in attracting or repelling mosquitoes, C. M. 
Gjullin tested shirts of different colors as follows: Shirts were worn 
for a period of 4 minutes each, immediately following one another, and 
under the same conditions. Counts of the numbers of mosquitoes resting on 
the back portion of the shirts out to the seams and down to the belt line 
were made at the end of each 30 seconds for the 4-minute period. In 
averaging the figures of these preliminary tests it was found that six 
times aS many mosquitoes rested on the black shirt as on the white shirt 
and that three times as many rested on the brown shirt as on the white. 
Only one test was made using red and blue colors. The figures for these 
two colors indicate that more mosquitoes would rest on them than on the 
white and less than on the brown. As many as 15 adults were counted on 
the black shirt in a 30-second interval; 55 adults, of which 52 were 
A. aldrichi and 3 A. vexans, were taken ina 10-minute collection follow— 
—— — Se 
ing this test." 
A new portable spraye .—-"A new 3-gallon capacity, one man, high- 
pressure, portable sprayer," the work of Herald M. Brundrett, specialist 
in insect-spray machinery, "has been just completed and tried out in the 
laboratory," at Dallas, Tex., reports E. W. Laake. "It embodies such new 
features as higher pressure, larger surge chamber, simplified pump, accessi- 
bility to all parts for repairs, and has the additional advantage over 
the old type in that one man can handle it nicely. The pump operates 
very smoothly and easily. The advantage of this sprayer is that it can 
be carried and pumped with one hand while the spraying is done with the 
other. It is the most promising sprayer yet produced in this work." 
