20 40 60 80 100 120 140 160 180 



220 240 260 280 300 320 340 360 380 400 420 440 460 480 



Fig. 6 Graphs showing the increase in the weight of the body with age for 

 males belonging to various generation groups of the two series combined (A, B). 

 Data in table 3 and in table 10: lettering as in figure 2. 



20 40 60 80 100 120 140 160 180 200 220 240 250 280 300 320 340 360 380 400 420 440 460 480 



Fig. 7 Graphs showing the increase in the weight of the body with age for 

 females belonging to various generation groups of the two series combined (A, B). 

 Data in table 3 and in table 10: lettering as in figure 2. 



23 



