CONTENTS— coM^ 



PAGE 



Brazil : A Machine for Disinfecting Cotton Seed 



Brazil; Coleopterous Borers in Acacia decurrens . . 



Brazil : A List of Cotton Pests 



British Isles : A New Aphid infesting Grasses . . 



British Isles : The Susceptibility of Clovers to Tylenchus dipsaci 



British Isles : Insects concerned in Pollination in Orchards 



British Isles : The Relation of Insects to Potato Leaf-curl 



British Isles : Natural Enemies of Tortrix viridana 



British Isles : Carpophilus ligneus infesting Dried Fruits 



British Isles : The Bionomics of the Turnip Gall Weevil 



British Isles : The Economic Importance of the Little Owl 



British Isles : The Relation of Parasitic Hymenoptera to Aphids 



Canada : Spraying and Dusting in Orchards and Market Gardens 



Canada : An Aphid transmitting Disease to Raspberries . . 



Congo, Belgian : Notes on Imported Pests 



Czecho-Slovakia : An Outbreak of the Nun Moth 



Dutch East Indies : Notes on New Thrips 



Dutch East Indies : New Gall-midges in Java . . 



Dutch East Indies : Eriophyid Mites from Java . . 



France : Sprays for Orchard Pests . . . . . . . . 220, 



France : Notes on Vegetable Pests 



France : Winter Treatments against Scale Insects in Orchards . . 



France : A New Parasite of Saperda populnea 



France : The Cultivation and Uses of Pyrethrum 



France : Notes on Miscellaneous Pests . . . . . . 240, 



France : Notes on the Argentine Ant 



France : The Effect of Weather on Vine Moths . . 



France : A New Entomological Station 



France : Idiocerus populi infesting Poplars 



France : The Economic Position of the Rook 



France : The Olive Fly Problem in the Region of Mentone 



France : Experiments with Chloropicrin as an Insecticide 



French Colonies : Quarantine Measures against Stephanoderes hampei 



Germany 

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 Germany 

 Germany 

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 Germany 



Government Measures against Pests of Agriculture 



The Bionomics and Control of the Winter Moth 



Ofl&cial Tests of Insecticides 



Measures against Meligethes spp. and Flea-beetles . . 



Pests of Grasses and Cereals 



An Outbreak of Phlyctaenodes sticticalis 



The Phylloxera Problem in Vineyards . . 



The Preparation of Nicotine Sprays . . 



A New Beet Pest, Phthorimaea ocellatella 



The Importance of Bird Protection in Forests 



A Nun Moth Outbreak 



The Occurrence of Trogoderma khapya 



The Economic Status of Baris coerulescens on Rape . 



Introduced and other Pests of Stored Foodstuffs 



Notes on Spinning Mites . . 



Notes on Diprion pini in Forests 



Notes on Wireworms and the Lupin Fly 



The Bionomics and Control of Cabbage Pests 



Notes on Ceuthorrhynchus riibsaameni . . 



The Bionomics and Migrations of Aphids 



Notes on Porthetria dispar 



A New Nematode infesting Potatoes . . 



Measures against Rape Pests 



254 



233 

 234 

 273 

 218 

 230 

 232 

 237 

 237 

 238 

 241 

 242 

 273 

 229 

 244 

 277 

 264 

 272 

 273 

 273 



267, 268 

 221 

 221 

 230 

 231 



265. 271 

 268 

 268 

 269 

 269 

 269 

 270 

 270 

 228 

 253 

 253 

 254 



261, 263 

 255 

 255 



255, 260 

 256 

 257 

 257 

 257 

 258 

 258 

 259 

 259 

 259 

 260 



261. 262 

 261 

 262 

 263 

 263 



262. 263 



A Bibliography of the Plant Protection Literature in 1914-19 264 



Guam: Insect Pests in 1920 278 



Guiana, British : Plant Pest Legislation . . . . . . . . . . 227 



Guiana, Dutch : The Bionomics and Control of the Cacao Thrips . . 279 



Hawaii : Insect Pests intercepted in Quarantine . . . . . . . . 277 



Holland : Summer Measures against Insect Pests . . . . . . 222 



Holland : The Relation of Aphids to Leaf-curl in Potatoes . . . . 236 



India: Natural Enemies of Mango Leafhoppers .. .. .. 218,219 



India : New Histerids infesting Forest Trees . . . . . . . • 230 



India : The Economic Status of the House Sparrow . . . . . . 235 



India : A New Mite infesting Capsicum . . . . . . . . . . 236 



Italy : Measures against Vine Moths . . . . . . • . • • 220 



Italy : Chrysomphalus dictyospermi infesting Citrus . . . . . . 222 



Italy : The Olive Fly Problem 252 



Malaya : Notes on New Thysanoptera 272 



