Sept. i3, 1916 



Dwarf Eggs 



981 



III.— SIZE AND SHAPE RELATIONS OF THE SEVERAL CLASSES OF 

 DWARF EGGS COMPARED TO EACH OTHER AND TO NORMAL EGGS 

 AND THE RELATIVE VARIABILITY OF NORMAL AND OF THE DIF- 

 FERENT CLASSES OF DWARF EGGS 



There is a considerable amount of variation within each class of dwarf 

 eggs in respect to every, measurable character. Table II gives for each 

 class the frequency distribution of variation for each dimension, the shape 

 index, and the weight. 



Table II. — Frequency distributions of the variation in size and shape of the several classes 



of dwarf eggs 



LENGTH 



20. 0-22. 9. 



23. 0-25. 9. 



26. 0-28. 9. 



29.0-31.9. 

 32. 0-34. 9. 



35- °-37- 9- 

 38. 0-40. 9. 

 41. 0-43. 9. 

 44.0-46.9. 

 47. 0-49- 9- 

 50. 0-52. 9. 



53- o-55- 9- 

 56. 0-58. 9. 



Class. 



Total. 



Frequency of prolate-spheroidal shape. 



Yolkless. ^u/,."* Asmallyolk. 



I 

 2 



5 

 14 

 16 



23 



11 

 6 



5 



83 



3 2 

 25 

 16 



23 

 16 



7 



5 



138 



a 26 



Frequency of cylindrical 

 shape. 



Yolkless. 



Some free 

 yolk. 



BREADTH 



a Two dwarf eggs of prolate-spheroidal shape, one with some free yolk and one with a small yolk, were 

 laid after the frequency constants and correlation coefficients had been calculated. These eggs are 

 included in Table I, but not in Table II, III, IV, or V. 



