35 
Mr. Smith considered Mr. Weed’s experiments with Paris green 
against Hippodamia convergens not conclusive as indicating their phy- 
tophagic habit, as the beetles might have been feeding upon plant lice 
and thus have been poisoned by the Paris green. 
Mr. Popenoe stated that he had found Hippodamia feeding upon rust 
spores. 
Mr. Weed described the treatment of Cotton for the Cotton Worm by 
means of a long pole carried across a mule’s back with a bag of Paris 
green hanging to each end of the pole. In this way four rows of Cotton 
can be treated at once with undiluted Paris green. 
Mr. Webster stated that in Louisiana four sacks were thus strung 
upon a single pole. 
Mr. Kellicott presented the following note: 
NOTE ON THE HORN FLY IN OHIO. 
By D. 8. KELuLIcoTT, Columbus, Ohio. 
Since the full accounts of the Horn Fly givenin INSECT LIFE and else- 
where, I, as many others doubtless, have sought for it wherever I had 
an opportunity. I remember no reports of its occurring west of the 
Atlantic border, but it certainly has a foothold in central Ohio. Dur- 
ing the first week of July last I found it in great numbers on the farm 
of Mr. A. Freed, Pleasant Township, Fairfield County. Large patches 
were seen on the backs and about the‘horns. The animals referred to 
had been dehorned, but the fly, true to its instincts, congregated about 
the stumps. At Sugar Grove, 8 miles south, a few were found, whilst 
at Rockbridge, 4 miles farther down the Hocking Valley, none were 
to be found. There appears to be none north of the first-mentioned 
Station, as I had a fair opportunity to examine cattle at Lakeside (Lick- 
ing reservoir). They have not been seen at Columbus. It seems from 
the limited observations [ have been able to make that it is spreading 
southward from near Lancaster. The Baltimore and Ohio Railway 
passes but a short distance north of this place, and it is easy to see 
that it is possible, or indeed probable, that it was introduced by trans- 
portation in cattle cars from the East. 
Mr. Smith stated that the Horn Fly was not injurious in any part of 
New Jersey last year, stockmen adopting the plan of spraying with 
fish-oilcompound. He also stated that the plastering of the dung was 
practiced in his State in small stock yards. 
‘Mr. Howard said that even in large grazing fields this latter plan is 
often practicable in spite of the objections which stock-growers urge. 
At the time when the flies are ovipositing the cattle are generally con- 
gregated in some one spot for shade. 
Mr. Lintner said that he heard of the fly in the southeastern portion 
of New York State. 
