766 



RATE OF GROWTH OF DOMESTIC FOWL 



12 3 4 5 6 7 



A^e in weeks 



Fig. 1. The rate of growth of the white mouse plotted from data by Robert- 

 son.^ Ordinates represent the weight (x) in grams gained per week; abscissa 

 represent the age (/) in weeks of the animals. 



Lba 





2 



6 8 10 15 



Age in weeks 



Fig. 2. The rate of growth of the Rhode Island Red fowl plotted from data 

 by Card and Kirkpatrick." Ordinates represent the weight (x) in pounds gained 

 per week; abscissae represent the age (/) in weeks of the birds from the time of 

 hatching. 



