CONTENTS 



PAGE 



History of the species 457 



In Europe 457 



In America 458 



Food plants 459 



Economic importance 462 



Distribution 462 



Life history 463 



The adult 463 



Egg laying . . .465 



The egg 466 



The larva 467 



The pupa 469 



Observations of European workers 470 



Control measures 470 



Experiments in 1913-14 471 



Experiments in 1914-15 473 



Experiments in 191516 475 



Method of application of carbolineum 479 



Cost of treatment 479 



Summary - 479 



Bibliography 481 



455 



