XX 



CONTENTS 



Other biennial weeds, 501 ; Perennial weeds, 502 ; Wild 

 garlic, 503 ; Canada thistle, 504 ; Bindweed or perennial 

 morning-glory, 505 ; Eradication of bindweed, 506 ; 

 Horse nettle, 507 ; Perennial ragweed, 508 ; Perennial 

 sow thistle, 509 ; Wild rose, 510 ; Other perennial weeds, 

 611 ; Hand eradication, 512 ; Spraying to kill weeds, 

 513 ; Spraying in North Dakota, 514 ; Results of other 

 trials, 515. 



CHAPTER XVIII 



CEREAL PESTS INSECTS 



471-504 



Insect Enemies of the Growing Crop : The Hessian 

 fly, 516 ; Description and food plants, 517 ; Life history 

 of the Hessian fly, 518 ; Effect of the larvse on cereal 

 plants, 519 ; Natural enemies of the Hessian fly, 520 ; 

 Effect of climate on the Hessian fly, 521 ; Preventive 

 measures, 522 ; The chinch bug, 523 ; Description and 

 life history, 524 ; Control measures, 525 ; The wheat 

 midge, 526 ; Spring grain louse, 527 ; The wheat straw- 

 worms, 528 ; The bulb-worm, 529 ; The army worms, 

 530 ; The sawflies, 531. Insects Attacking Stored 

 Grain : The granary weevil, 532 ; The rice weevil, 533 ; 

 The saw-toothed grain beetle, 534 ; The cadelle, 535 ; 

 Three other grain beetles, 536 ; The yellow meal worm, 

 537 ; The confused flour beetle, 538 ; Other flour beetles, 

 539; The Angoumois grain moth, 540 ; The Mediterranean 

 flour -moth, 541 ; The Indian-meal moth, 542 ; The meal 

 snout-moth, 543 ; The control of indoor cereal insects, 

 544 ; Heating to a high temperature, 545 ; Demonstra- 

 tion in mills, 546 ; The advantages of the heating method, 

 547 ; Fumigation with hydrocyanic acid gas, 548 ; Fu- 

 migation with carbon bisulfid, 549. 



CHAPTER XIX 



CEREAL PESTS PARASITIC FUNGI 



Cereal Eust Diseases : The orange leaf-rust, 550 ; The 

 dwarf rust, 551 ; The black stem-rust, 552 ; The crown- 

 rust, 553 ; The yellow or stripe-rust, 654 ; Control meas- 



505-638 



