The Bulletin. 35 



emulsion. And Dr. Forbes in his Chinch Bug work in 1912 found that, 

 "Chinch Bugs were killed by the soap solution alone, with no injury to 

 the corn, if cheap rosin soaps were used at the rate of 1 lb. to 6 gals, 

 water." 



In this State such brands as "Octagon," "IN'ew Home," and the like are 

 everywhere in common household use, and we have controlled many 

 plant-lice by using these brands dissolved in water at rate of 1 lb. to 4 

 gals. Hence we give the method by which we have prepared it, believing 

 (without actual test against this particular pest) that it will be quite 

 satisfactory against young Chinch Bugs: 



Cut 1 lb. of soap into thin slices in 2 gals, water. Bring to boil to 

 dissolve the soap; now pour in 2 gals, water (cold preferably), and spray 

 while the solution is still warm. 



If the cheaper grades of "rosin soap" are on hand, they may be used 

 in same way, or, as suggested by Dr. Forbes, even at the weaker strength 

 of 1 lb. to 6 gals. In spraying for Chinch Bugs use liberally enough to 

 thoroughly drench them. 



In closing this discussion of the remedial measures for the Chinch 

 Bug, it is of interest to read the following letter from one who used the 

 furrow method. This letter is here given because there are so many 

 who believe that such a remedy Avill not prove satisfactory: 



* * * Will say that I first had deep furrows, throwing the dirt from the 

 corn and then bedded back to the corn. In this way the bugs were held in 

 check, and destroyed only ten or twelve rows that they first appeared in. 

 Thanking you for your prompt reply, I am. 



Very truly, W. N. Boyd. 



Warrenton, Warren County, N. C, October 19, 1904. 



ARMY WORMS— TWO KINDS. 

 Order Lepldoptera. Family Noctuidw. 



There are two distinct, though closely related, species of corn insects 

 which when abundant are commonly called "Army-worms." The adults 

 of both are moths and they belong to the same family (Noctuidw), which 

 family also contains the cut-Avorm and ear-worm moths, discussed in 



this BULLETII^. 



iVs the life-histories of these two insects differ, we discuss each sepa- 

 rately. The one which normally is destructive earlier in the season is 

 the true "Army- worm" ; the other which is destructive later is distin- 

 guished by the name of the "Fall Army-worm," 



THE ARMY-WORM. {Heliophila unipuncta, Haw.) 



t 



Description. — The grown caterpillars are about l^/o inches long, of a 

 dark gray or blackish color with three narrow yellowish stripes above 



