96 
JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 16 
Mr. William Moore: One reaction of nicotine not generally recog¬ 
nized is its ability to unite with carbon dioxide of the air, to form nico¬ 
tine carbonate. This reaction occurs under moist conditions, but free 
nicotine would be again liberated under dry and warm conditions. The 
reaction is similar to that of ammonium carbonate. 
vSession adjourned 5.30 p. m. 
Scientific Notes 
Practical Control of Eleodeshispilabris Over an Extensive Area. Experiments in 
1921 that were successful in the control of Eleodes adults over a small area were re¬ 
peated on a much larger scale in 1922. Experiments were in cooperation with farm¬ 
ers and the area treated embraces approximately 18,000 acres. It was further demon¬ 
strated that control is practical and economical by poisoning the beetles soon after 
emergence and before they have had an opportunity to lay eggs that produce the 
succeeding generation. Beetles emerge in July and August and do not oviposit until 
the following May. A poison mash made of bran, Paris green, amyl acetate and 
water distributed broadcast or in the bottoms of furrows plowed at regular intervals 
killed the beetles effectively at a cost of about 2j£c per acre for materials. One 
man and a team and driver readily treated 320 acres per day. One cooperator com¬ 
bined the plowing and distribution in one operation thus greatly increasing the acreage 
treated per day. Results were directly proportional to thoroughness of application. 
Where the individual farmer was sincere and painstaking in his work almost com¬ 
plete eradication of the beetles was obtained. 
Claude Wakeland, 
Experiment Station Entomologist, University of Idaho. 
Introduced mite attacking Willow. During August, 1922, the attention of the 
writer was called to a heavy mite infestation on willow, Salix alba, at Chambers - 
burg, Pa. 
The mites were not only on the leaves but had spun their webs over the main trunk 
of the tree almost to the ground and over all the limbs so that the tree had a peculiar 
light shining appearance. An adjoining black willow was also infested altho not so 
heavily. 
Specimens of the mite were sent to Dr. Ewing who identified them as Schizote- 
tranychus schizopus Zacher. The only reference the writer could find to this species 
is contained in a paper by E. A. McGregor in Vol. 56, Proc. of the U. S. Nat. Mus., 
1919. It has been recorded only from Germany. Zacher found it on several 
species of willow at Dahlem, Germany, and described it in 1910. It is of interest to 
note that Salix alba is an introduced species of willow. 
J. R. Stear, 
Chamber sbnrg Laboratory, Penna. Dept, of Agriculture 
“Fire Ant” Injurious to Potatoes in California. —While conducting field investi¬ 
gations in the upper or southern part of the San Joaquin Valley, I was told by the 
proprietor of a hotel that a stinging ant was destroying potatoes in the vicinity of 
