268 



EARL W. BENJAMIN 



Jan 



Feb. lF~ March 



April 



May 



June 



July 



Aug. 



Oct. 



FlG. 41. MEAN MONTHLY VARIATION IN SHAPE OF EGGS PRODUCED IN CERTAIN CALENDAR 

 MONTHS FOR A PERIOD OF SIX YEARS. RECORD OF TEN INDIVIDUALS BEGINNING TO 

 LAY IN JANUARY 



Feb. - . March 



April 



May 



June 



July 



Aug. 



Sept. 



Oct. 



FlG. 42. MEAN MONTHLY VARIATION IN COLOR OF EGGS PRODUCED IN CERTAIN CALENDAR 

 MONTHS FOR A PERIOD OF SIX YEARS. RECORD OF TEN INDIVIDUALS BEGINNING TO 

 LAY IN FEBRUARY 



