Density (no./m^) 



poo 

 b ^ k) 



p pppppppp p p p o o 

 ui lu Ia» *o U s> ui ii. In b '«- k) l»j ■*» 



p p 

 In as 



c 



° 65 



.3 



^:^.] 



i^i] 



.Hi 



3\ 



C/3 

 3" 

 2. 



3- 



n 

 cfq" 



5' 



7 



so 



'"" 5' 



> = 

 II II 



1^ oc 



II II II 

 K> i -J 



'as ce *^ 



^ 



&: 





r OJ "I 





at 



