256 



Earl W. Benjamin 





/y0C7/7 for ^rsf /fea/7 for jreco/7c/ ^ 



Grama i^eors /yrocfucf—^ __ ^ s/Ar/h i/ears proc/acf. 



64 -1 ' ' ' ■ — ' ' — ■ — ' ' ' ' 



63 

 62 

 61 

 60 

 69 

 58 

 57 

 56 

 55 

 64 

 63 

 52 

 51 

 Month 1st 2d ■ 3d 4th 5th I 6th 7th 8th 9th 10th llth 



Fig. 28. monthly variation in size of eggs produced during a period op six 



YEARS 

 The figures in parenthesis designate the number of birds available for the respective calculations 



Second uears T/t/zz/ i/earj ^cf/^/? (/ea/v ff/^h umars S/x^ t/eaz-j- 



Month 1st 2d 3d 4th 6th 6th 7tb 8th 9th lOtb llth 



Pig. 29. monthly variation in size of eggs produced during a period of six 



YEARS 

 The figures in parenthesis designate the number of birds available for the respective calculations 



