84 



TENTH BIENNIAL REPORT 



treatment of infested land would, therefore, be about the same in both 

 methods but the catching machine would be available for future treat- 

 ments that would cost only the labor of dragging it over the fields. 



l-'iKiiii- :;. I':ii;|]l liuiidiiMi pounds nf l^i-ussIkiiiiji'Is (_■; 

 fifteen minutes with the grasshopper catthing machine, 

 used with great success as winter poultry food. 



liiliL J 11 iwu Ihhhs and 

 These were dried and 



When crops are attacked by grasshoppers that swarm in from sur- 

 rounding vacant land, repeated applications of the poisoned bran mash 

 are needed to save the crops and in such cases the cost becomes pro- 

 hibitive, while with a catching machine the crops can be saved by 

 having a boy or hired man run it a few^ hours each morning and even- 

 ing. 



It frequently occurs that materials for the poison bran mash 

 cannot be secured on short notice, while a ranch provided with a 

 catching machine is ready for years to come to meet grasshopper 

 invasions at a moment 's notice. 



Combination of Methods Is Best Practice 



Under some conditions such as extremely hot and windy weather 

 or on prairie sod the catching machine is not successful. In cold, wet 

 weather poisoning is difficult. In general poisoning is most success- 



