54 
Variation and Correlation in Brain-Weight 
Diagram III. Probable Brain-weight for given Age. 
Swedish ? Total. 
I 1350 
< 
) 
( 
> < 
< 
) 
) 
< 
> ( 
( 
) 
( 
) - 
< 
) 
22-5 27-5 32-5 37 5 42 5 475 52-5 57 5 62 5 67-5 72-5 77 5 
Age ( = A) in years. 
Diagram IV. Probable Brain-weight for given Age. 
Hessian i Total. 
17 5 22 5 27 5 32 5 37 5 42 5 47 5 52 5 57 5 62 5 C7 5 72 5 77 5 
Age { = A) in years. 
Diagram V. Probable Brain-weight with given Age. 
Hessian ? Total. 
CO 
g 1150 
17 5 22 5 27 5 32 5 37 5 42 5 47 5 52-5 57 5 G2 5 67 5 72 5 77 5 
Age ( = A) in years. 
