NUMBERS 



1600 - 

 1600 - 



1400 - 

 1200 - 



1000 - 



400 



20 



30 



40 SO 6C 



LENGTH, CENTIMETERS 



70 



60 



Flc. 2.--w«t^ht«rt l.tijrth freouerole, of iie.itfHh t»k«n .t Northern «. J. 



