COMPARISON OF PTERIDOPHYTA. 



20 1 







w — 5 P 



Mi 





— i ^ u ro Oi o oj 



O " ^ ,„ > h c 



-^'•.p|2_. 



c _ S a -sS o 



g'«^ 



; ij R aj o 



'■^.a'i 



Z D . 



— ai « 

 z O H 



&£«-, o £ c S 

 c/> bb o H-l b o E 



^ aj flj « 



sg 



ES 



P3S 





^g. 



"S:S" 



5 o »; ii 



^^ ^.5ir5 - 



3 ^ "5 " rt ° 



■ m ft C = ~ o 



5 [fi ~ £ 



i) c 1/; ; 





5 &": 





rt ^ c =^~ 





" 7: S C " :S-i 



5-5 ttc'^ 5 



S'5 



ft-S 



QJ to 



fens 



C "Zl 





^ 3 p J g-i E ^ 



IJ o 



ii'SE^i, 



= C -1.3 S >. 



r^^ 



•—■CO 



; gE"-=E 



