Vol. IV, Nos. 3 and 4. ] INSECT LIE ER. [Issued November, 1891. 
SPECIAL NOTES. 
Entomological Work at the Iowa Experiment Station.*—This Bulletin con- 
tains, as its fifth article, reports of the entomological work of Herbert 
Osborn and H. A. Gossard. The subtitles are: The Clover-seed Cater- 
pillar (Grapholitha interstinctana Clem.), Experiments with the Hopper- 
dozer for Grass Leaf-hoppers, Kerosene emulsion for Plant-lice, Note 
on Grasshoppers, The Flavescent Clover-weevil (Sitones flavescens A1l.), 
and the Wheat Bulb-worm (Meromyza americana). <As the first of these 
articles appeared in the iast number of INSECT LIFE in the Proceedings 
of the Association of Economic Entomologists, it will not require further 
mention. The second describes a home-made hopperdozer and the re- 
sults of its use on the campus of the lowa Agricultural College. Many 
grass leaf-hoppers were captured, and multitudes of the Clover Mite 
(Bryobia pratensis) were also caught. The hay crop from the treated 
portion of the campus was compared with that taken from an untreated 
portion of the same size, with a result of 34 per cent in favor of the 
treated plat. The authors conclude that the yield of hay or pasture 
land may be increased from one-fourth to one-third at a cost not exceed- 
ing 10 cents per acre, by the use of the hopper-dozer. The conclusion 
arrived at from experiments with kerosene emulsion for plant lice is, 
that this substance is a perfect remedy against these insects, if the 
application is thoroughly made, and that it need not be repeated to give 
certain results. The note on grasshoppers comprehends a brief sum- 
mary of the outbreaks of the season and a few paragraphs upon the 
ordinary remedies. The most interesting note in the bulletin is that 
announcing the appearance of Sitones flavescens in injurious numbers 
upon clover in Iowa. This weevil is imported from Europe, and while 
it has been found to be abundant in clover fields in the Eastern States 
during the past few years, its occurrence as far west as Iowa is unwel- 
come news. The Wheat Bulb-worm has been found at Ames in mod- 
erate numbers, but it is preyed upon abundantly by Coelinius, its Brac- 
onid parasite, and injurious multiplication is not feared. | 
*Towa Agricultural Experiment Station, Bulletin No. 14, Des Moines, August, 1891. 
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