[Sept., '02 ENTOMOLOGICAL NEWS. 223 



MR. : KNST J. OSI.AK has been collecting in Arizona. 



PROF. A. J. SNVDER and the Comstock brothers are making a wagon 

 trip across the Rockies in Colorado 



Mr. ERICH DAECKK is constantly adding species to the New Jersey list. 

 His stamping ground is Southern New Jersey. 



MR. WARRKN KNAUS. of McPherson, Kansas, spent some time at 

 Cloudcroft, Sacramento Mountains, New Mexico. 



I. A. G. REHN, G. M. Greene, Chas. T. Greene, VV. S. Huntington, 

 and C. W. Fenninger are going to Lehigh Gap, Pa., to collect. 



MR. LANCASTKK THOMAS is again among the mountains of North 

 Carolina, and he will doubtless add to the list of North Carolina Lepidop- 

 tera as usual. 



HENRY W. WKN/KL and his son, Harry, are trying to exterminate the 

 Coleoptera in the mountains of North Carolina. We are expecting big 

 returns, as both father and son are famous collectors. 



MR. O. C. POLING, of Quincy, Illinois, has been exploring the Tonto 

 Basin, about one hundred miles south of Hagstaff, Arizona. Some new 

 and many rare species were captured He went through a very wild 

 and interesting country, having been gone five weeks. 



OTHERS not mentioned are doubtless doing good work, but neglected 

 to advise us of their outings. The people that like to read Notes and 



News never send us any. 



i <> ' 



DEPARTMENT OF EGONOMI6 ENTOMOLOGY 



Edited by Prof. JOHN B. SMITH, Sc. D., New Brunswick, N. J. 



Papers for this department are solicited. They should be sent to the editor, 

 Prof. John B. Smith, Sc.D., New Brunswick, N. J. 



NOTES ON LIME-SULPHUR-SALT WASH AS 

 AN INSECTICIDE. 



BY C. W. MAI.LY. 



Agricultural Department, Cape Town, Africa. 



The white peach scale, Diaspis pen ta^ona Targ., is the most 

 destructive scale pest of peach trees in the Colony. During 

 the last ten years or more lime-sulphur-salt wash has been 

 largely used for its destruction, and well made and thoroughly 

 applied has given satisfactory results. 



One peculiarity of the treatment is the fact, observed hy 

 the Government Entomologist, Mr. Charles P. Lounslmry, 

 that, although tin.- trees were thoroughly sprayed, much live 

 scale could be found for some time afterward, and still at the 



