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year were collected on the same day as the latest used last year, and 

 from which nothing was reared. Those used the present year were from 

 a more southern locality, where the season was correspondingly earlier, 

 but the earliest to fall last year were used on experiments of June 20, 

 leaving only the later fallen for the experiment of a few days later, 

 and which gave no adults. Therefore, it would appear that the later 

 punctures either contained fewer eggs, or else a larger portion of the 

 larvae perished before reaching maturity. If this be true, the variety of 

 plum whose blooming season covers the greatest period of time will 

 best withstand the work of the curculio ; the earliest appearing fruit 

 forming a sort of protection for the later. 



So far as my experiments have gone the rule seems to hold good 

 among both apples and plums. All of the apples used in both last sea- 

 son's experiments and this were grown among plum trees also fruiting, 

 thereby demonstrating the fact that the planting of plum trees in the 

 apple orchard will not protect the latter and vice versa. 



From the drift of evidence gained from experiments of both last year 

 and this, it would appear that if anything is to be gained by using 

 another fruit to draw off the curculio and protect the plum, the point 

 is almost as likely to be attained through the Nectarine as the apple. 

 Indeed, this year the apples on the tree from which the fruit for last 

 year's experiment was obtained suffered as bad or worse than the plums 

 on trees growing interjacent. For position of this tree see Diagram. 



The apple tree bloomed profusely, and produced a good crop of young 

 apples, but by July 24 there was scarcely a dozen left on the tree, and 

 the condition of these is illustrated by a figure,* drawn from specimens 

 picked on this date, and bearing not only crescent marks in abundance, 

 but also punctures, indicating that the adult beetles had recently been 

 feeding on the pulp. 



There seems to be little doubt but that the food punctures were made, 

 in part at least, by the newly emerged adults. I saw an adult punctur- 

 ing a plum at Greencastle, Ind., on June 22, and Mr. W. O. Fritz, fore- 

 man of the experiment farm, on July 23, brought me an adult curculio 

 found that forenoon engaged in the same mischief, and adults were 

 observed in experiment No. 1, July 29, which might have been and 

 doubtless were present some days earlier, as the experiment had not 

 been examined. It seems rather more than probable that the latest 

 appearing individuals of the old brood of beetles may occur simultan- 

 eously with the advance individuals of the new brood, both feeding 

 upon the fruit of the plum, apple, etc. 



Occasional notices appear in the agricultural papers to the effect 

 that the female curculio will not oviposit in fruit overhanging water. 

 While this seems very doubtful, to say the least, an experiment was 

 made in order to test the matter, but while clearing up the fog in one 

 quarter, the results appear to have still further increased the obscurity 

 in another. 



*This figure will be published iu the next number of Insect Life. 



