APPENDIX 



SPRAYS AND WASHES 



WATER alone, applied with some force, will dislodge a 

 good many insects, but most pests require the addition of 

 some more active substance to the wash. The formulas 

 below give the amounts necessary to make an oil-can-ful (5 

 gallons), and also a barrelful (40 gallons) of each mixture. 

 Spray with heavy pressure for scale insects, and make every- 

 thing thoroughly wet ; but for other pests less pressure and 

 material is necessary, for the leaves should scarcely be 

 made to drip. 



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