MlCHUiAN ACADEMY OF SCIKNCK. 



IHI 



a 



s 



I 



w 

 en 



V 



o 

 U 



Ci 3 



CS 



T3 



3 

 o 



c 

 a 



2 



u 



J3 



6E 



C 



- -5 



<u ■<-• 

 n. a 



a " 



OJ 



•f4 )h 



o o 



IX! ^ 



C3 





■a 



^ 



l-H 



B 

 O 



a 



it 



c3 



G 

 '3 

 (V 



O 



< 

 U 

 O 



CO rtj 



CM 



t- o 



