SAMUEL BRODY 



769 



2 4 6 8 iO 15 



Age Of emlDiyo in days 



20 



Fig. 3. The rate of growth of the chick within the egg plotted from data by 

 Lamson and Edmond.^ Ordinates represent the weight (x) in grams gained per 

 day; abscissas represent the age (/) of the embryo from the beginning of 

 incubation. 



2 4 6 8 10 15 



Age Of embpyo in days 



18 



Fig. 4. Same as Fig. 3 plotted after data by Hasselbalch.'" 



