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_ On August 15 applied kerosene emulsion to bugs accumulating on Corn, using an 
emulsion diluted to contain abcut 6 per cent. kerosene and spraying with mae 
- nozzle. Great numbers of pugs could be found dead within a few minutes after ap- 
_ plication, and on the following day hosts of dead could be found on the ground, 
_ around the hills treated. In places, however, the stalks had become weil covered 
-by live bugs that had moved in to fill the place of the slain. 
- $ubsequently the farm department applied it on a larger scale, using 5 to 6 per 
_ cent. emulsion, and spraying from barrels in a wagon, one man working the force- 
- pump and another manipulating the hose and cyclone nozzle, walking rapidly 
among the hills of Corn and directing the spray upon the masses of bugs. This ve- 
- suited in the destruction of great numbers. in this application the cyclone nozzle 
- was found by all means most satisfactory. 
_. Asugsested its trial to some of my correspon ‘tents, and one letter received in re- 
"> : : ‘ . 
‘ ply is of sufficient interest to be noted: 
pe" CAMBRIDGE, Iow, July 20, 1887. 
<" DzEAR Sim: Your most satisfactory letter received some time since. The conclusion 
7 7 - 5 5 = a % 
, is a success; it was instant death to the Chinch Lugs. But it takes so much when 
_ you want to go over 5 or 6 acres that one can not stand the expense. It could be 
_. would a part stay on the Corn while the rest would lie under sods and anything else - 
- _ that would protect them from the sun. When your letter reached us they had left 
the \\ heat (which they fully destroyed), and had gone into the Corn, which they killed 
B ‘ for ten or twelve rows in some places, and some places not so far. Then they . 
- seattered over more territory for a time, but now they have left the Corn (alaowth, 
_. having flown away,I think. [am uncer obligations to you for your kindness, 
Very respectfully, 
5 J. E. WARREN. 
i Professor OSBORN, 
4 Ames, Iowa. 
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_. The use of kerosene can hardly be expected to prove of value except when the 
_. bugs are massing on Corn. At this time, application to an acre or two of the field 
e next to. stubble may do much to save the rest of the field. By arranging nozzles 
- with special reference to most efficient work in corn rows, and while Corn is small 
» enough to drive a team in the field astride of one row, I think spraying can be done 
4 quite thoroughly at a cost of 30 to 40 cents per acre for rnoisivil 
__A eyclone nozzle, with pressure sufficient to do good work, discharges about 1 
‘pint of liquid per minute. Adjusting three nozzles to play upon one row of Corn, 
one each side and one from above, and allowing teams to walk slowly 2 miles per 
_. hour, and it will take 30 gallons of liquid per acre, which, using 5 to 6 per cent. 
_~ emulsion, costs about 30 cents, exclusive of labor, which for ieam and man an hour 
% and a quarter would be about 40 cents more. First cost of force pump must, of 
~ eourse, be considered; the cost of labor on the farm, however, where the farmer 
- 
uses his own team and does the managing of apparatus himself, might be counted 
A. s 
Ann) 
BOGUS CHINCH BUGS. ‘ 
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_- Professor Riley figures and describes in his Seventh Missouri Re- 
: _ port four species of Heteroptera which are frequently mistaken for 
__ the Chinch Bug and are often the cause of unnecessary alarm. We 
_ have reproduced the figures of these species upon Plate [I]. The first 
is the False Chinch Bug (Nysius angustatus, Uhl, fig. 9), which was 
. frequently sent to Professor Riley. Itis found all over the country, 
and occasionally damages certain crops quite seriously, Grape-vines, 
_ Strawberries. Potatoes, young Apple grafts, and all cruciferous plants. 
report, it is found in California congregating under Polygonum. It 
_.is the insect which caused the alarm in California in 1880. Tt was 
originally described by Mr. Uhler under the name given above, but 
» was subsequently redescribed by Mr. William R. Howard as Nysvus 
raphani and by Professor Riley as Nysius destructor, who cited 
Mr. Uhler’s authority at the time for considering the form distinct. 
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stood to go over it once or twice if I could have got the bugs all on the Corn, but they — 
It is also very fond of Purslane, and, as mentioned elsewhere im this © 
i 
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+ less. By using only two nozzles or by driving faster the expense will be lessened. _ ~ 
. i 
