12 



II- "I 



9 



I 8 



co 7 



CO I 



6- 



o 



x 5 



H 



4 

 3 

 2 



2 

 3 

 4 

 5 

 6 

 ~ 7 



5 8 



x 



5 9 

 *I0 



II 



12 



13 



14 



15 



16 





Fig. 3z. — (See opposite page for legend.) 



