THE CANADIAN ENTOMOLOGIST 187 



entomological. His last article, "Notes on Some Ottawa District 

 Plants" (11 pp.) was published in the February, 1917, issue of 

 The Ottawa Naturalist. He was certainly an excellent student 

 and most careful writer. His writings have indeed enriched our 

 knowledge of Canadian Entomology. 



His wife, one son and one daughter survive him. To them 

 we extend our deepest sympathy in their sad bereavement. 



Arthur Gibson. 



POPULAR AND PRACTICAL ENTOMOLOGY. 



Experiments With Cutworm Baits.* 

 by john j. davis and c. f. turner, lafayette, indiana. 



In the Emergency Entomological Service of the United States 

 Department of Agriculture, No. 5, Sept. 1, 1917, we reported ex- 

 periments to determine the suitableness of sawdust as a filler for 

 cutworm and grasshopper poison baits in place of the increasingly 

 expensive wheat bran. Briefly these results were as follows: 

 Tests were made at Johnson, Indiana, in a corn field infested with 

 so-called "over-flow worms" {A gratis ypsilon). Here the regula- 

 tion bran mash, that is 1 lb. poison to 25 lbs. filler (sawdust or 

 bran), 2 quarts molasses, six lemons and water as needed. Three 

 formuhe were used. Paris green and bran, Paris green and saw- 

 dust, and white arsenic and bran, and these were scattered broad- 

 cast at the rate of 5 lbs. per acre. The ground thus treated July 

 9 was re-planted to corn July 14, and counts were made July 23, 

 with the following results: 



Paris green and bran 2% plants cut. 



Paris green and sawdust 5% plants cut. 



White arsenic and bran 3% plants cut. 



Check 50% plants cut. 



Similarly at Akron, Indiana, experiments were conducted 

 with Paris green and bran and Paris green and sawdust for the 

 control of the army worm (Cirphis iinipiincta) . Two strengths 



*Pjblished by permission of the Secretary of Agriculture. 

 Jn: e, 1918 



