80 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 6 



Control. A portion of the orchard was sprayed on June 10 just 

 after the flies were seen and again on June 24. No heavy rains fell 

 during the intervening two weeks. A sweetened mixture of 2| 

 lbs. arsenate of lead, 1| gals, of cheap syrup, and 50 gals, of water 

 formed the spraying solution. It was applied to the lower branches 

 of each tree by hand. 



On July 11, two crates of cherries, containing an average of 6,400 

 cherries to the crate, were picked from the sprayed portion of the 

 orchard. The first crate, picked from the tops of the trees in the 

 outside sprayed row, contained seventeen maggots. In the crate 

 picked from the lower branches there were only two maggots. A crate 

 of cherries picked from the check trees was badly infested with cur- 

 culio and brown rot and fully one-third of the fruit contained maggots. 

 The check rows showed less and less infestation the nearer they were 

 to the sprayed trees. ^ 



Flies captured, oh the check rows next to those sprayed, died in a 

 day or so, showing that they had obtained poison by going over on the 

 sprayed trees. 



All the evidence appears to show that the flies are easily poisoned 

 and that they travel from tree to tree for a considerable distance from 

 where they emerge. 



There is considerable evidence being gathered to show that the ordi- 

 nary codling moth spray, without the addition of syrup, will control 

 these flies. 



President W. D. Hunter: This paper is now open for discussion. 



A Member : I would like to ask if Rhagoletis cingulata and fausta 

 are in the same orchard. 



Mr. G. W. Herrick: Yes; they were found in the same orchard 

 at Trumansburg, N. Y., but this test was tried wholly on fausta. 



Mr. W. C. O'Kane: Were all the trees infested? 



Mr. G. W. Herrick: The fruit in that orchard was, and in two 

 other orchards, it was badly infested. 



Mr. W. C. O'Kane: Did all the trees. have fruit the previous year? 



Mr. G. W. Herrick: I do not know. 



]\Ir. W. C. O'Kane: Do you know whether there was such fruiting 

 and infestation the previous season as to insure an equal amount of 

 flies throughout the orchard? 



Mr. G. W. Herrick: The flies were on all the trees. 



Mr. W. C. O'Kane: The reason I bring this point up, is because 

 in the work with the apple maggot we have found it necessary to have 

 the yield, the disposition of the fruit, and the amount of infestation 



