Sept. 18, 1916 



Dwarf Eggs 



100 1 



duction — that is, 1911-12 and 1914-15. During any year a few dwarf 

 eggs may have escaped collection by being broken in the nest or laid on 

 the floor and lost in the litter. This loss can not have been large at any 

 time. However, in order to avoid the possibility of an unequal loss during 

 the several years, the two years of highest dwarf -egg production were 

 selected for a comparison as to the frequency of dwarf and normal eggs. 

 The frequency of the occurrence of dwarf eggs compared to normal 

 eggs may be determined by calculating the percentage of all the eggs 

 produced which are dwarf. For convenience this percentage may be 

 multiplied by 100. This number represents the number of dwarfs in 

 10,000 eggs. This percentage was calculated for each of the 12 months 

 of the two years taken both separately and combined. These data are 

 given in Table XXII. 



Table XXII. — Total egg production, dwarf-egg production, and number of dwarf eggs 

 per 10,000 eggs for each month of the years IQII-I2 and IQI4-15 both separately and 

 combined, also for the two years combined the percentage of all the eggs and of all of the 

 dwarf eggs which were produced during each calendar month 



Month. 



Total 



eggs. 



Dwarf 



eggs. 



Dwarf 



eggs per 



10,000 



eggs. 



Total 

 eggs. 



Dwarf 

 eggs. 



Dwarf 



eggs per 



10.000 



eggs. 



1911-12 and 1914-15 combined. 



Total 

 eggs. 



Dwarf 

 eggs. 



Dwarf 



eggs per 



10.000 



eggs. 



Per- 

 centage 

 of total 

 n um- 

 ber of 

 eggs 

 pro- 

 duced 

 during 

 month. 



Per- 

 centage 

 of total 

 num- 

 ber of 

 dwarf 

 eggs 

 pro- 

 duced 

 during 

 month. 



September... 



October 



November.. . 

 December . . . 



January 



February 



March 



April 



May 



June 



July 



August 



Total. . 



4-5 

 .0 



7-4 



8.9 

 12. 9 

 23-9 



3-6 

 15.0 



694 

 2,589 

 3-771 

 5.416 

 7- 131 

 8.409 

 9,728 

 1 1 , 406 

 11. 051 

 10,080 

 9,618 

 8,667 



5-7 



2,564 

 5-529 

 6,484 

 9,917 

 11. 560 

 12,784 

 19,135 

 19. 292 

 18, 789 

 17, 201 

 15,157 

 13 324 



11. 7 

 1.8 



12.3 

 5-o 

 5- 2 



2-3 



6-3 

 7.8 

 9.0 

 15-7 

 14-5 

 9.0 



1. 69 

 3-64 

 4.27 

 6.54 

 7.62 

 8-43 



12. 6l 



12. 71 

 12.38 



H-34 

 9.99 

 8. 78 



2. 29 

 .76 

 6. 11 

 3-82 

 4-58 

 2.29 

 9. 16 

 n-45 

 12.98 

 20. 61 

 16.79 

 9. 16 



63,176 



9-3 



3,560 



8.1 151-736 



8.6 



The last line in Table XXII shows the total number of eggs, the total 

 number of dwarf eggs, and the number of dwarf eggs per 10,000 for each 

 of the two years, and for the two years combined. From these data it is 

 seen that during the year 1911-12 the flock produced 59 dwarf eggs out 

 of a total of 63,176, or 9.3 dwarf eggs in 10,000 — that is, 1 dwarf egg in 

 each 1,071 eggs. In 1914-15 the flock produced 72 dwarf eggs in a total 

 of 88,560 eggs — that is, 8.1 dwarf eggs in 10,000, or 1 dwarf to 1,230 

 eggs. If the data for the two years are combined, there were produced 

 131 dwarf eggs in 151,736 eggs — that is, during the two years of maxi- 



