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NATURE-STUDY REVIEW [16:3— Mar., 1920 



The adult of a cut worm 



The Imported Cabbage Butterfly 



The Squash 

 Bug 



The Squash Vine Borer 

 The Proper Way to Make Mixtures for Spraying 



The wise gardener keeps certain materials on hand so that he 

 can make up his spraying mixtures as soon as they are needed. 

 It must always be remembered that the poisons we use to kill 

 insects are also poison to us and that we must handle with care. 



Kerosene Emulsion. — This emulsion is made by dissolving 

 one-half pound of laundry or ivory soap in one gallon of boiling 

 water and then adding two gallons of kerosene oil. As soon as 

 the oil is added and while the mixture is hot it should be vigorously 

 churned or pumped back into itself until a white, creamy emulsion 

 is formed. For spraying plants in leaf, it should be diluted by 

 adding 1 7 gallons of water. This mixture is valuable in spraying 

 for plant lice and young squash bugs. 



Bordeaux Mixture. — Bordeaux mixture is primarily a fungi- 

 cide and used to control fungus diseases of plants but is also our 

 chief reliance for checking the potato flea beetle as already des- 

 cribed. It is made as follows: Dissolve four pounds of copper 

 sulphate in 25 gallons of water. Then slack four pounds of stone, 

 or quick lime by the gradual addition of water until the lime has 

 become thoroughly pulverized and then add enough water to make 

 25 gallons. The two solutions should then be poured together 

 thus making 50 gallons of Bordeaux mixture ready to apply. 



