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MONTANA EXPERIMENT STATION BULLETIN 366 



highly probable that they were the primary agent in the 

 decimation of the 'hoppers which moved into the State in July. 

 Twenty-one domestic animals died as a result of eating 

 carelessly exposed bait or bait materials. No serious injury to 

 humans resulted from the campaign. 



Figure 4. — Discarded bread mixer converted into bait mixer, Sheridan County. 



Grasshopper Situation for 1937-1938 



for 1937.— The grasshopper survey, carried on in collaboration 

 with the Bureau of Entomology and Plant Quarantine during the 

 autumn of 1936, allowed for the prediction of a moderately heavy 

 infestation over most of the plains area of the State with still 

 heavier infestations along the Continental Divide and in the 

 Yellowstone Valley. Fortunately, the infestation along the divide 

 was held in check by natural factors. The worst affected counties 

 were Blaine, Carter and Fallon, Dawson, Fergus, Golden Valley 

 and Musselshell, Park, Prairie, Sweet Grass, and Wibaux. Drought 



