1 62 



ILLINOIS ACADEMY OF SCIENCE. 





IS 



cn-W 



■d o 



5 <" 



< 



ii o 





in u 



5-^ 



\0 1^ 



O <L» 



^E 



n C 

 > o 



■MOO 





E c:-^- 



> c 3 

 C 



5^ S o 3 

 J'. 2"*- 3 



^o Sii 



i; hn o 



sc/2.yv, 



■=.E «J 



5 o.Jr 3 



11. "3 '•' 



S O 



^ O 



