Ninth Report of tee State Entomologist 433 



the report of the Gypsy Moth Committee. The mixture used by 

 them would seem to be an excellent one, viz., one pound to 150 gallons 

 of water and two quarts of glucose. The glucose held the poison on 

 the leaves during hard showers, and proved to be a useful addition, 

 and preferable to any other substance tried for prolonging the effects 

 of the arsenite. Yet this, they state, while destroying the young 

 caterpillars, failed to kill those that were nearly mature. A grove of 

 trees that had been twice sprayed with a strength of one pound to 100 

 gallons of water was afterwards entirely stripped of leaves. Although 

 many of the caterpillars were killed, there were subsequently gathered 

 from under the same trees over 1,100 living pupse of Ocneria. The 

 Paris green used was several times analyzed and found to be fully 

 equal to any in the market. 



It is difficult to believe that foliage sprayed with a strong mixture 

 of Paris green will not kill all caterpillars that feed freely upon it, and 

 the statement above-made needs confirmation. It is not impossible 

 that the nearly matured caterpillars which were not killed, may have 

 fully matured and ceased feediog preparatory to their pupation; or the 

 observations may have been during the two or three days of cessation 

 . from food that may precede the last of the larval moltings. 



Spraying for the Codling Moth. — The following is quoted from the 

 American Cultivator^ of January 2d, 1892: A careful examination was 

 made of two trays of unassorted apples, each containing one hundred 

 specimens, the fruit in one tray being taken from a sprayed tree and 

 the other from an unsprayed one adjoining. The apples were divided: 

 into three grades. No. 1 being perfect apples. No. 2 having one or two 

 blemishes, and No. 3 being almost worthless. In the tray from the 

 unsprayed tree, there were four perfect apples, 58 second-class, and 38 

 culls, while the tray filled from the sprayed tree contained 84 first- 

 class, 9 second-class, and Y culls. {Insect Life, iv, 1892, p. 288.) 



E. G. Lodeman reports, in Cornell Bulletin 48, signal results in 

 spraying for codling-moth in the very wet season of 1892. 



Spraying for the Plum Curculio. — Reports from a number of fruit- 

 growers in Ohio indicate that spraying with Paris green is considered 

 an effective remedy for the plum curculio. It is thought that two 

 ounces of the green to 50 gallons of water is sufficient, if three or four 

 applications are made during the season; and that the use of the dilute 

 Bordeaux mixture in connection with the insecticide will prevent injury 

 to the foliage. The mixture of fungicides and insecticides was also 

 used with beneficial effects on pear trees attacked by the curculio. 

 (Abstract in Experiment Station Record, from Ohio Station Bulletin, 

 No. 9, vol. iv, December, 1891.) 

 1893. 55 



