302 MAINE AGRICULTURAL EXPERIMENT STATION. I916. 



of all the eggs produced which are dwarf. For convenience this 

 percentage may be multiplied by ioo. This number represents 

 the number of dwarfs in 10,000 eggs. This percentage was cal- 

 culated for each of the two years of highest dwarf egg pro- 

 duction, i. e., 1911-12 and 1914-15. These data are given in 

 Table 4. 



Table 4. 



Showing for the Years 1911-12 and 1914-15 the Total Number 

 of Eggs, the, Total Number of Dwarf Eggs and the Number 

 of Dzvarf Eggs per 10,000. 



Yeah. 



Total 

 number 

 of eggs. 



Total 

 number ol 

 dwarf eggs. 



Number of 



dwarf eggs 



per 



10>000. 



1911-12 



1914-15 



63,176 

 88 ,560 



59 

 72 



9.3 

 8.1 



Total 



151 ,736 



131 



8.6 



From these data it is seen that during the two years of maxi- 

 mum dwarf-egg production the proportion of dwarf to normal 

 eggs was 8.6 dwarfs in 10,000 eggs, or one dwarf in 1,158 eggs. 

 Warner and Kirkpatrick 13 show that during two laying contests 

 at Storrs, Connecticut, 199,137 eggs were produced of which 

 103 weighed less than .09 lb. (40.82 gms.). From these figures 

 we see that they obtained 5.2 dwarf eggs per 10,000, or one 

 dwarf egg in 1,933 eggs. 



The nine flocks which laid the dwarf eggs considered in 

 this investigation contained approximately 4,800 different indi- 

 vidual birds. Of these 4,800 birds about 5 per cent, produced 

 at least one dwarf egg. By means of the data given by Warner 

 and Kirkpatrick (loc. cit.) we see that during the third and 

 fourth laying contest at Storrs, Connecticut, 85 out of 1,820 



"Warner, D. E. and Kirkpatrick, W. F. 1916. What the Size of Egg 

 Means. Jour, of Heredity, Vol. VII, pp. 128-131. 



