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Experiment No. 14. — June 24, one hundred and seventy-six Wild Plums, from woods 

 in Knox County, Ind., containing two hundred and twenty egg punctures, placed in 

 vivaria. 



Result of examination September 4 : Thirty-five adults. Dead. 



Experiment No. 15.— June 24, fifty-nine Lombard Plums, from Knox County, Ind., 

 containing seventy-nine egg punctures, placed in vivaria. 



Result of examination September 4: Fifty -one adults. Mostly dead. 



Experiment No. 16.— June 24, one hundred and ninety-one Blue Damsom Plums^ 

 from Knox County, Ind., containing two hundred and twenty-six egg punctures, 

 placed in vivaria. 



Result of examination September 4: Seventy-six adults. Few alive. 



Experiment No. 17.* — Jnue 25, fifty-three Apples, from Princeton, Ind., containing 

 sixty-two egg punctures, placed in vivaria. 



Result of examination September 6: Five adults. Living. 



Experiment No. IS.* — June 25, fifty-four Apples, from same tree as No. 17, contain- 

 ing nixty egg punctures, placed in vivaria. 



Result of examination September 6: Nothing. 



Experiment No. 19.*— June 25, twenty-nine Apples, from same orchard as No. 17, 

 containing thirty-six egg punctures, but from another tree, placed in vivaria. 



Result of examination September 6: Three adults. All living. 



Experiment No. 20. — June 26, forty-seven Nectarines, from same tree as Experiment 

 No. 4, and containing forty-eight egg punctures, placed in vivaria. 



Result of examination September 4 : Six adults. Living. 



Experiment No. 21.— June 26, ninety Blue Damson Plums, from E. Yenowine, 

 Edwardsville, Ind., containing one hundred and twenty-five egg punctures, placed in 

 vivaria. 



Result of examination September 4 : Ten adults. Dead. 



Experiment No. 22.— July 12, twenty large Damson Plums, from isolated tree in 

 garden of Hon. E. H. Scott, La Porte, Ind., containing sixty-five egg punctures, 

 placed in vivaria.t 



Result of examination August 13, 14, 16 : Twenty adults. All living. 



Summary of experiments. 



As will he observed, the greatest mortality to eggs and larvre between 

 tbe time of ovipositiou and the hatching of the adult occurred in the 

 Wild and Eobiuson varieties of plums. Also that the apples used this 



I 



*A number of plum trees were growing in the immediate vicinity, but I could not 

 get enough fallen plums for experiment. 



t The top was so covered with a cone-shaped screen that the adults could be observed 

 as soon as they emerged from the ground. 



