98 



AKSEXITE OF COPPER. 



The writer recommended this substance as an insecticide in July, 

 1S95. 1 Several years of experimental testing have followed, some of 

 the results of which have been reported at various sessions of this 

 association. 



During the last year or two this substance has also been experimented 

 with by several station entomologists and individuals. It is an insec- 

 ticide which can be used with as great safety as Paris green, and I 

 believe should be recommended by every station entomologist, from the 

 fact that it has the decided advantage over Paris green — (1) in costing 

 only one-half as much, and (2) in being a very fine pulverulent powder, 

 which remains easily in suspension. It is perhaps slightly more caus- 

 tic on foliage than Paris green, due solely to the finer division of the 

 powder, as proven by various experiments with Paris green, when the 

 latter is ground up somewhat approaching the fineness of arsenite of 

 copper. It now comes from the manufacturers- in a better form than 

 the original samples received and much freer from soluble arsenic, 

 being thoroughly washed before drying, to remove any uncombined 

 arsenic. In its present form it contains about 50 per cent of arsenic. 

 It is put on the market under the name of green copper arsenite. 



INSECTS OF THE YEAR IN OHIO. 



By F. M. Webster and C. W. Mallt. Wooster. Ohio. 



There has so far been no very disastrous outbreak of any insect in 

 Ohio during the present year. Chinch bugs are attracting some atten- 

 tion locally in widely separated localities, but the trouble is less than 

 during the last four years. Canker-worms have been reported from 

 several localities. The spring was rather noted for the sudden appear- 

 ances of swarms of insects, not usually noted, but whose habits are of 

 that nature. The most noted of these was the sudden appearance 

 early in May of great numbers of the pear-tree blister-beetle (Pom- 

 ylwpasa cvnea Say) on the grounds of the experiment station at Wooster, 

 where they covered a very small area in the midst of the orchards, but 

 devoted their entire attention to plum, seemingly ignoring the pear 

 trees which were close by. Anomala midulata appeared at Bolivar Ma}* 

 14 in the evening and stripped the plum trees, remaining under boards, 

 etc., during the day. At Minerva a few days later the same insect did 

 considerable injury to the young growth of the pear. A similar appear- 

 ance of Hoplia trifasdata occurred at Grand Rapids, Ohio, in April, 

 the beetles attacking the cherry trees, eating the foliage, but more 

 especially the petals of the blossoms. 



i Insect Life, Vol. VII, p. 408-411. 



2 Adler Color and Chemical Co., 96 Maiden Lane, New York 



