SAMUEL BRODY AND ARTHUR C. RAGSDALE 



625 



dx 

 where K is the velocity constant. On plotting — for various values 



at 



of X a curve of a rising and falling type is obtained with a maxi- 

 mum at the center where x — A — x or x = ^A z,s shown in Fig. 1. 



Lbs. 



•S 50 

 B 40 



•i 



I 



20 

 10 



10 15 



Age in months 



20 



25 



Fig. 2. Velocity curve of growth of the Jersey cow. Ordinates represent 

 velocity of growth, the height of the rectangles representing monthly gains in 

 weight; abscissae represent age in months. 







10 



15 



20 



25 



A^e in months 



Fig. 3. Velocity curve of growth of the Holstein cow. Ordinates and abscis- 

 sae have the same meaning as in Fig. 2. 



