CONTENTS 
PAGE 
Introduction 5 
Organization 6 
Insects and diseases considered 8 
Terminology and explanation 8 
Methods employed " 9 
Records of results 10 
Spraying experiments for the control of insects 11 
Codling moth 11 
Effects of various commercial arsenates of lead 23 
The Plum curcuHo 25 
Spraying for the control of fungous diseases 33 
Apple scab 33 
Apple blotch 51 
Cedar rust 62 
Sooty blotch and flyspeck 63 
Bordeaux vs. lime sulphur 64 
Home-boiled vs. commercial lime sulphur 77 
Commercial preparations sold as fungicides 78 
Penetration vs. mist spraying 78 
Cumulative effects of spraying 83 
Cost of spraying 84 
Results of spraying based on commercial returns 92 
General summary and recommendations 94 
