Foreword 



This study is part of a regional project in which a number of 

 state experiment stations and the Production and Marketing Admin- 

 istration cooperated. The Delaware, Maine, Maryland, and Massa- 

 chusetts Experiment Stations each worked on local phases of their 

 hatching egg problem and will publish their findings. The New Hamp- 

 shire Experiment Station and the Poultry Branch of the Production 

 and Marketing Administration co-operated in planning and carrying 

 out experimental shipments of hatching eggs and in collecting data. 

 The project was financed in part by funds made available under the 

 Research and Marketing Act of 1946. 



