39 



stances it must soon reduce the 'hoppers to normal. Other Locust ene- 

 mies in the form of parasitic and predaceous insects, insectivorous birds, 



reptiles, and mammals were also quite numerous both here and along 

 the line of the Union Pacific Eailroad, where I saw swarms of this 

 locust. Just where the eggs have been laid by this insect during the 



present year I can not say, but that large areas have been so afflicted 

 is quite certain. 



Of one fact I also feel certain, viz, that unless tillers of the soil very 

 soon allow themselves to be convinced that it is not only possible to 

 prevent much of the injury caused by insect pests, but just as necessary 

 to attempt it as it is to destroy weeds, they may be obliged to | 

 through other grasshopper plagues. 



