214 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 12 



western Kansas to make a grasshopper egg survey. Throughout the 

 western part of the state the eggs were found in large numbers. In 

 the spring following the dry cold winter, another survey was made and 

 it was found that a high percentage of the eggs had come through 

 the winter unharmed, and thus it was almost certain that in order to 

 protect the crops a campaign on grasshopper control would have to 

 be conducted. 



It was decided to conduct the campaign by holding demonstration 

 meetings, personal farm visits with demonstrations, and by appro- 

 priate window displays throughout the counties where prospects for 

 grasshopper outbreaks were favorable. This work was started in 

 the field on May 13, which was about the normal hatching time of 

 Melanoplus differentialis and M. hivittatus. During the next seven 

 weeks, 21 counties were covered, in which 24 demonstrations were 

 given, 16 window displays arranged, and 240 farmers visited on their 

 farms and given instructions. At each demonstration the life-history 

 of the grasshopper was explained and a small amount of poison bran 

 mash was properly mixed and distributed with a sowing device.^ In 

 this way the farmers could actually see the process and should make 

 no mistake in mixing large batches for use on their farms. Not only 

 was much interest shown at these demonstrations, but the proposition 

 actually was put into practice by a great number of farmers. 



In three counties, Finney, Hamilton, and Kearney, the ingredients 

 for the poison bran mash were provided for out of countj^ funds, and 

 was distributed in the fields following the first cutting of alfalfa. In 

 practically every instance where the poison was used the second crop 

 of alfalfa came on normally. However, many farmers did not use the 

 poison, and almost without exception they cut but one short crop of 



1 Device described by T. H. Parks, Journ. of Econ. Ent., Vol. 10, No. 6, pp. 524- 

 525, 1917. 



Explanation of Plate 10 



1. Demonstration meeting at Olmitz, Kans., attendance 127. The wheat to the 

 left of the road completely destroyed from 15-20 rods back from the road. Egg pods 

 very numerous along the roadside. 



2. Demonstration meeting at Offerle, Kans., attendance 70. Wheat to the right of 

 the road destroyed. The grass land between the wagon road and the railroad con- 

 tained a large number of egg pods. 



3. Demonstration meeting on a Ford county farm, attendance 10. Picture shows 

 an uncultivated strip of land with wheat on either side. A typical place for oviposi- 

 tion. Egg pods were very abundant. 



4. Demonstration meeting at Heizer, Kan., attendance 23. A hard beaten 

 fence-row between two wheat fields. A typical place for oviposition. Egg pods 

 were very numerous. Both wheat fields badly injured. 



All photographed by A. L. Ford. 



