226 



it feeds is considered, the prospect of its wide s]:)read in this country 

 would naturally cause serious alarm. Prominent European entomolo- 

 gists have expressed the opinion that the Oips}' moth might easily be- 

 come a worse pest in this country than the Colorado potato beetle. 

 The eggs are globular, about one-eighteenth of an inch in diameter, 

 smooth, and nearly salmon colored. They are laid in oval or rounded 

 masses on the under side of brandies, on trunks of trees, below the 

 surface of the ground near trees, on fences, or on the sides of build- 

 ings, in the early part of July. Init do not hatch imtil spring. The 

 caterpillars, which are very dark brown or black, finely reticulated 

 with pale yellow, feed together on the leaves, or rest side by side on 

 branches and trunks of trees. The mollis, which emerge from the 

 pupa3 from July 1 to 15, are yello^^■isll brown or white, with dark 

 brown cross lines and spots of similar color on the wings. The ex- 

 panse of Avings is from 1-| to 2f inclie.-.. The insects might be de- 

 stroj'cd by scraping all the masses of eggs from the trees and other 

 places where they have been deposited, and burning them. As it 

 seems hardly possiljle to do this. Professor Fernald recommends that 

 all the trees in the infested region lie showered with Paris green water 

 (1 iDOiuid to 150 gallons) soon after the hatching of the eggs in the 

 spring. If this reconunendation is followed promptly wherever the 

 insect appears it may 1)e destroyed without great labor or expense. 



[It may be added that the subject is to be l)rought to the attention 

 of the State legislature for appropriate action. — Editor.] 



MICHIGATn. 



Experiment Station of Michigan Agricultural College. 

 DeixirtiitcHt of 3Iichi<jan A;/rifiilfiir<il CoUajp. 



Location. Agricultural College. Director. Oscar Clute, ;m. S. 



BULLETIN No. 51 (STATION). JULY, 18S0. 



Ene3iies of the wheat aphis, a. J. Cook, M. 8. (])p. 3-T). — This 

 was written in response to numerous inquiries from farmers who 

 feared that the insects which destroyed the wheat aphis would also 

 complete the de-truction of the crops, begun by the aphis. In order 

 to remove this fear illustrated descriptions are given of the Braconid 

 fly, lady-bird beetles, Syrphus fly, and Chrysopa fly. and the Avays 

 in which they destroy the wheat aphis are described. 



BULLETIN No. 52 (STATION). .7ULY. 18Sn. 



Commercial fertieizers. R. C. Kedzie. M. D. (pp. 1-T). — This 

 contains the analyses of thirty-tAvo commercial fertilizers olFered for 

 sale in this State during 1889, and the text of the Michigan fertilizer 

 law. Under this law " every fertilizer whose retail price exceeds $10 

 a ton requires a license from each dealer, unless the manufacturer 



