INDEX. 



Z^-Z) 



PAGE 



Sporotrichum anthophilum 2t i 



bombycinum 21S 



poae ■ 2:1 



roseolum 218 



Spraying, effect on foliage go 



fruit 65 



experiments with orchards 57 



Spruce budworm, bibliography ji 



habits and description 19 



history and distribution 13 



natural control 24 



remedial measures 28 



leaf miners •. 32 



Tobacco decoction for aphides 186 



Tortrix fumiferana i-> 



Vegetable cylinders for Fusarium cultures 228 



Whale oil soap for aphides 188 



Willow, aphid pests -73 



Willows, species affected by aphides 93 



Woolly aphid of the apple 173 



economic status 180 



habits 173 



life cycle 182 



preventive measures 185 



structure key 183 



elm bark 260 



aphids of the elm 2'9 



habitat kej"- 184 



