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JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 11 
The common formula for grasshopper bait (bran and arsenic) was tried but gave 
little protection. The most successful method of control was flooding the orchard or 
vineyard for a few hours. This would usually drive them out into grass land or the 
roadside for a few days at least and give the young planting an opportunity to re¬ 
cover. By the first of June the crickets had disappeared so completely that it was 
with difficulty a single specimen could be found. 
E. Ralph De Ong. 
Thrips Injuring Peaches. Five or six years ago peach growers in the vicinity 
of Benton Harbor reported the presence of something producing blemishes on fancy 
peaches. The injury consisted of shallow, gummed scars on the fruit, little more 
than skin deep—injury that does not interfere with the quality to any extent, but 
which places what would otherwise be a fancy peach, in the second class or lower be¬ 
cause of its appearance. The cause of this injury was obscure and was only made 
known after a trip by Mr. G. C. Woodin, at that time an assistant in this department, 
who managed to get to the orchard at the right time, just after the fruit set and while 
the little peaches were growing rapidly. On many of these peaches one would find 
patches of slightly discolored fuzz, which, when stirred with a needle were found to be 
practically eaten off or shriveled close to the skin of the fruit. In these patches were 
many miniature thrips which disappeared into the standing fuzz when disturbed. 
Such patches showed the skin to be abraded somewhat, but the surfaces healed and 
were covered with gum soon afterward, resulting in blemishes. The work of plum 
curculio was to be seen on the same fruit from time to time, and curculio eggs were to 
be seen sometimes in the denuded patches, although the work of the thrips is not 
characteristic of the curculio. 
The damage by the thrips seems to be all done before the pits begin to harden and, 
therefore, before thinning time, which is fortunate because it makes it possible to 
eliminate many of the blemished fruits during thinning. 
It is interesting to note that the injury seems to be most severe in the highest, driest, 
and warmest parts of the orchards and during seasons having hot, dry springs. 
During June of 1917 Mr. P. B. Wiltberger, an assistant in this department, sue- 
