414 EXPERIMENT STATION RECORD. 



considered to be extremely injurious to the trees as well. Some experi- 

 ments recently conducted at the Ohio Experiment Station are brieflj'- 

 outlined, in which the experimenter sprayed a]>ple and peach trees with 

 pure kerosene without apparent injury. The author does not recom- 

 mend it, especially on young trees, but in a badly infested orchard it 

 might pay to risk a few trees as an experiment. 



The codling moth and the apple maggot, C. M. Weed {Xeic 

 Hampshire Sta. Bui. 55, pp. 39-S5, figs. 3). — Popular notes are given of 

 the 2 most destructive insects affecting the fruit of the apple in New 

 Hampshire, the codling moth and the ai)ple maggot. The first-named 

 insect has apparently not increased in destructiveness during the past 

 20 years, while the apjjle maggot is undoubtedly increasing from year 

 to year. 



For the prevention of the codling moth, spraying with Paris green is 

 recommended, applying the insecticide when the apples are from the size 

 of a pea to that of a hickory nut. Two, and in case of very wet weather, 

 3 applications are recommended. 



For the apple maggot si)raying does not prevent injury, since the 

 eggs are deposited beneath the skin of the fruit, and the destruction of 

 windfalls and general clean culture seems to be the best way of keep- 

 ing this insect in check. 



Proceedings of the seventh annual meeting of the Association 

 of Economic Entomologists {U. iS. Dept.Agr., Division of Entomol- 

 ogy Bui. 5, n. ser.^pp. 100^ fig. 1). — This contains the papers and discus- 

 sions before the meeting at Springfield, Massachusetts, August 27 and 

 28, 1895. 



Entom,ologiGal notes and problems, J. B. Smith (pp. 6-18). — Advocates 

 careful cooperation among entomologists by assisting in the study of 

 the same insects and comparing results, deprecates the publishing of 

 incorrect popular articles by newspapers, and urges prompt and con- 

 certed action against insect pests as soon as their presence is known. 



Notes on insecticides, C. L. Marlatt (pp. 19-26). — Experience with a 

 mechanical mixture of kerosene and water against the euonymus scale 

 indicated that it was not so efi'ective as kerosene emulsion, and that the 

 percentage of oil could not be regulated. Soaps and arsenite of copper 

 were satisfactorily tested as insecticides, and notes are given on arsenate 

 of lead and cyanid of potassium. 



Some experiments with the Inapsach 'kerosene attachment., If. E, Weed 

 (pp. 26-28). — The author's experience with a mechanical mixture has 

 been most satisfactory both in killing insects and not injuring the 

 foliage. 



A modification of the lerosene knap sacTc sprayer, CM. Weed, and spray- 

 ing without a pump, J. 31. Aldrich (pp. 28-30). — Authors' abstracts of 

 descriptions of contrivances for the mechanical mixture of kerosene and 

 water, followed by discussions of the papers. 



'■'■ Raupenleim^^ and ^^ Dendrolene," J. B. Smith (pp. 31, 32). — An 



