268 



Earl W. Benjamin 



Index 



Jan 



- II Feb. '{T" March " i April ] " ' May 3 June "i \ July 



Aug, 



Sept. 



Oct. 



Fig. 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 



Color 



Feb, 



March 



April 



May 



June 



July 



Aug. 



Sept. 



Oct. 



Fig. 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 



