FORM AND GROWTH IN FISHES 



393 



0.20, of body to length is 0.50, and of tail to length is 0.30. In a 

 given unit of time the fish increases to the size represented by 

 B. Since the form of the fish is constant, the relationships 

 between the total length and the length of head, body, and tail 

 are the same as they were in A. It will be seen that the total 

 length has increased 10 units, the head 2 units, the body 5 





4-6 8 10 12 [4- 16 18 20 22 24- 



Ltri&TH-Cn5. 



Figure 9 



