INJURIOUS INSECTS 



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in suspension. It sometimes contains much soluble 

 arsenic, however; hence, is more liable to burn the fo- 

 liage. Its use in spraying is the same as Paris green, 

 with the exception that it is advisable to add greater 

 amount of lime. 



BAIT. -Paris green or London purple 1 ounce, 

 chopped grass or clover 8 ounces, and enough syrup to 

 permit the mass to be worked into balls. These balls 

 are spread around gardens for wire-worms, beetles, 

 crickets, katydids, etc. For grasshoppers and cut- 

 worms, mix 40 pounds bran, 15 pounds middlings, ar- 

 senic 20 pounds, cheap grade of syrup 2 gallons. Mix 

 in soft water to a paste. 



For Insects with Sucking Mouth-parts. 



KEROSENE EMULSION. - It is evident that such in- 

 sects will not imbibe sufficient arsenic placed on a leaf, 

 under the cuticle of which the sucking insects are with- 

 drawing plant juices, to poison them. These insects 

 are destroyed by contact poisons or external irritants, 

 such as kerosene emulsion ; a spray composed of soft 

 water 1 gallon, hard soap ? pound. The soap is dis- 

 solved in the water by shaving and then boiling with 

 the water. Remove from fire and add 2 gallons of 

 kerosene ; mix thoroughly, add 30 gallons of soft water 

 and apply with kerosene emulsion spraying-pump. To 

 kill, this must reach the bodies of the insects. The 

 substance is penetrating, and enters the breathing-tubes 

 through spiracles of the body, interfering with respira- 

 tion, and finally choking the insect. 



Crude petroleum, applied with emulsion spraying- 

 pump during winter months when leaf buds are closed 

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