162 



INDEX. 



their 



ble 



offspr: 



Pasture vegetation, ecological studj' of . 



Peaches, genetic composition of 



Phosphate, residual value 



Pigs, experiments in feeding 



Pigs, \-itamines as aids in growth . 



Plant diseases: 



Api)le disease control 



Carrot blight .... 



Cranberry diseases 



Cucumber mildew under glass, spraying for 



Lettuce drop, methods of control 



Onion diseases .... 



Onion smut, relation of soil to occurrence of 

 Potato, spraying v. dusting for disease control 

 Tobacco investigations .... 



Tobacco wildfire, control 

 Plant stimulation by formaldehyde 

 Potash, availability of . 



Potash, effect of sulfate and muriate on the soils of Fields A and B 

 Potato, sprajdng v. dusting ...... 



Poultry: 



Broodiness in ...... . 



Changes in egg production in the station flock 



Introduction ....... 



Litcratm-e cited ...... 



Plan of procedure ...... 



Basis of selection of breeding females 



Basis of selection of breeding males . 



Continued use of breeders on basis of performance of 



Foundation stocks ...... 



Management, points which afTect results 

 Seasons at which increased production is most desira 

 Recommendations ...... 



Results secured ...... 



Changes in age at which first egg is laid 

 Changes in amount of broodiness 

 Changes in daily winter production . 

 Changes in date of last egg .... 



Changes in length of initial cycle and winter pause 



Changes in mean annual production 



Changes in mean winter production . 



Changes in rate of production .... 



Changes in seasonal distribution of production . 

 Changes in variability ..... 



Influence of changes in sanitary methods . 

 Summary ........ 



Working hj-pothesis ...... 



Diagnosi.s of Baclcrium pullorurn infection in 



E.xperirnental ....... 



Agglutination test, present status as a means of control of Bacter 

 in young stock ...... 



Fermentation tests, conclusions from 

 Fermentation tests with Bacterium pullorum 

 Fermentation tests with Baclcrium sangxdnarium 

 Fowl typhoid, distribution in Massachusetts 

 Hatching quality of eggs and viability of young stock. 

 Paralysis, does either Bacterium puilorum or Bacteri 

 any part in . . . 



Historical .... 



Literature cited 



Summary ..... 



Mode of inheritance of various characters 

 Projects, report on ... . 



Agricultural economics . 



Animal nutrition .... 



Animal feeding .... 



Digeslil)ility of feeding stuffs 

 Miscellaneous .... 



Crop and crop management studies 

 Breeding ..... 



Orchard management 

 Plant introduction 

 Strain and variety tests 



mg 



influence of 



um pu 



llorum 



infection on 



um sanguitiarium play 



