Senate Doc. No. 148. 



Plate XXI. 



O 



X 



H 

 O 



o 



o 



CD 

 H 

 > 



H 



O 



z 

 I 



r 

 > 



w 

 O 



r 



O 



o 



-n 

 -n 

 m 

 m 



■V 



r 

 > 

 z 

 H 

 > 

 H 

 O 



