VIU 



CONTENTS. 



Bulletin 178. The European corn borer, Pyrausta nuhilalis Hubner, a recently 

 established pest in Massachusetts, . 

 Discovery and identification, 

 Description of the insect, .... 

 European history, ..... 

 Status of the pest in eastern Massachusetts, 



Importation, ..... 



Present distribution, .... 



Food plants, ..... 



Importance, ..... 



Character of injury, .... 



Life history and habits, .... 

 Control, . . . . . . . 



Co-operation, ..... 



Bulletin 179. The greenhouse red spider attacking cucumbers and methodi 

 for its control, .... 



Introduction, ...... 



History and distribution, .... 



Food plants, ...... 



Nature of injury to cucumbers, 



Economic importance of the pest on cucumbers, 



Life history, ...... 



Feeding habits and dispersion, . 



Natural enemies, ..... 



Introduction to experiments, 



Experiments conducted in the laboratory, . 



Fumigation experiments. 



Spraying experiments, .... 



Summary of materials found to be efficient experimentally 

 Experiments conducted in commercial greenhouses. 



Lemon oil, ........ 



Linseed oil emulsion, ...... 



Conclusions drawn from commercial spraying experiments 

 Prevention, ........ 



Control measures, . . . 



Preventive measures, ...... 



Repressive measures, ...... 



Control of red spiders attacking other crops, 

 Summary, ........ 



Bibliography, ........ 



Bulletin 180. Report of the cranberry substation for 1916, 

 Blueberry culture, ....... 



Weather observations, ...... 



Frost protection, ....... 



Fungous diseases, ....... 



Storage tests, ........ 



Tentative practical conclusions based on the results of the storage tests 

 Resanding, ...... 



Fertilizers, ...... 



Insects, ....... 



The cranberry rootworm, 



The gypsy moth, ..... 



The cranberry tip worm. 



The black-head fireworm, 



The cranberry fruit worm. 

 Bog management, ..... 



