of Fura m in i feral Structure. 



171 



5:5 



4{ s 



.^1 

 s g 



■o 



a o 



<1 

 Q 

 O 



O 

 N 



72 -^ 



■-C a 

 V o 



a ffl 



^i 



<;►? 



I— I 



o 

 '•^ 

 o 



CO 



=p ^ 



c^.-= 



'C b o 05 a 



12^ 



