AND OTHER INJURIOUS INSKCTS OF I907 AND IQOS. 37 



receipt and the order to serve as a voucher when he sends his bill 

 to the entomologist. All bills for oil must be presented before De- 

 cember 1st of the year in v^^hich the oil is sold. Firms furnishing oil 

 free to farmers without a signed order from a county commissioner 

 do so at their own risk. 



Fig. 21. Pellucid locust or grasshopper, Camnula pellncida. 



Killing by Poisons: Grasshoppers are susceptible to Paris 

 green, and when timothy fields or pastures are infested with eggs, 

 and the farmer feels that he cannot plow such land, he may, when it 

 is possible, poison a strip of plants about ten feet wide, growing on 

 the edge of the grain field, and fenced away from stock, with arsenate 

 of lead or Paris green. Stock in an inclosed pasture will gradually 

 drive the hoppers to the poisoned plants outside. 



Garden truck to which chickens do not have access may be pro- 

 tected to some extent by mixing bran with water to the consistency 

 of chicken food, mixing with it Paris green until the mass has a de- 

 cided green color (about two pounds of Paris green to twenty-five 

 pounds of bran) and sweetening with cheap molasses or syrup. Balls 

 of this stufif can be strewed amongst the plants we wish to protect, 

 not allowing them, however, to come in direct contact with the plants. 



Fig. 22. Two-striped locust or grasshopper, M. bivitattus. After Riley. 



The best poison, however, and the cheapest, is known as The 

 Criddle Mixture; this has proved an excellent remedy in Canada 

 and elsewhere, provided it is used while the hoppers are small and 



