ECOLOGICAL CROSS SECTION OF THE MISSISSIPPI. 



247 



SOURI 





1 





ILLINOIS 



4 



and 



6 



Bluff 



Lowland 





River 



Lowland 



Bluff 





Upl 



15 



16 17 



5 



18 



1 

 1 



19 11 



12 



12 



1 



20 



21 22 23' 



26 



25 



14 



11 



12 



H- 



12 

 Je 



11 



18 

 Jl 



24 



16 



15 



14 



12 7 



1 











1 













1 , 





-h 



Fr 



+ 

























1 

 1 

 1 











1 



2 



1 









Fr 



+ 



Je 



Jl 









m_ 









4- 







+ 





1 

 1 







1 



+ 







1 



3 



1 



4 

 5 

 6 



■ 



1 

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1 



+ 



Fr 

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Fr 



My 



My 



Fr 

 Je 

 Je 

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+ 

 Jl 



Je 



Jl 









4- 



4- 



4- 





± 



1 





tt 

















7 







± 



± 



± 





± 



± 





± 











± 



1 

 1 



1 



± 



± 











1 







1 





8 







1 



Fr 



Je 



Jl 









± 





± 





rb 





1 







± 















1 





9 





± 



Fr 



+ Ag' 



N 



± 



















1 







+ ' 









i 

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4- 



1 

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10 

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+ 



Fr 



+ 

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My 



Jl 



Je 



1 



Ag 



1 







1 



4- 





4- 









-f 











1 



1 

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12 









Fr 



Jl 



Ag 





1 





4- 









4- 





■ 







+ 







+ 



1 



1 









13 



+ 



\ 



+ 



Fr 



My 



-h 



Je ■ 





















+ 



+ 







+ 



1 











14 



1 





Fr 



Je 



Jl 



















4- 









+ 







+ 













15 





+ 



1 

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4- 



Jl 



Ag 



4- 







■ 



















+ 







+ 



1 

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1 

 1 

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1 







16 





+ 



1 



+ 



Jl 



Ag 



4- 

























+ 







H- 





1 



1 







17 



1 



+ 



1 



+ 



Je 



Jl 



4- 



































1 



1 

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1 







18 





+ 



Fr 



+ 



Jl 



Ag 



H- 



































1 

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19 





+ 



Fr 



+ 



Jl 



Ag 



4- 



















1 

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± 







+ 







1 



i 







20 





+ 



Fr 



1 



+ 



Jl 



Ag 



=b 









1 



1 











1 

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X 



1 





1 



X 



1 



23 



1 



X 

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X 



X 

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21 



X 

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X 

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1 



X : 



Fr 

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Fr 



S 



S 



S 

 

 



X 









1 

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1 



1 



1 



1 

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1 



1 

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1 



1 



1 





1 



± 



1 



X 



1 

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1 





X 

 X 



28 

 29 

 30 



1 



24 

 25 



26 



27 



X 



X 



X 



31 



± 



lb 



Fr 



l<'r 



Fr 



Fr 



Fr , 



Fr 



Fr 



l^'r 



± 

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Jl 



Ag 

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X 



Jl 

 

 

 



s 

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± 

 ± 

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 X 

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± 



m 



X 







1 

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1 

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1 



1 



1 



1 

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1 

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i 



1 





1 

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1 

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1 



± 















lb 













32 







Fr 



zb Jl 







± 



1 

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1 

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1 





























] 



33 



± 



1 



1 



Fr 



± : 



Jl 



s 



± 

























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± 











1 

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34 



± 





Fr 



± ; 



Jl 



± 





1 





















1 



1 







+ 











35 







^ 



Fr 



+ 



Je 



Jl 



4- 



i 

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+ 







+ 













36 





+ 



Fr 



1 



+ 



Jl 



4- 



Ag 























X 













X 





X 



37 









Fr 



X 



S 



N 





1 



















* 













d= 



1 







38 

 39 



i 



± 



Fr 



Fr 



± 



± 



Ag 



My 



S 



S 



± 





1 



1 

 1 



1 

 1 



j 

























± 











1 



40 



± 



1 



Fr 



± 



± 



Ag 



± 























■ 





d= 



i 











1 



1 



1 



41 









Fr 



Ag 



S 



1 

 1 



,± 



± 



















• 



± 









+ 





1 

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] 



1 



42 

 43 









Fr 

 Fr 



± 

 My 



Ag 



+ 



s 



Je 



lb 









4- 



4- 



4- 







1 





1 

 1 



1 

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1 



X 



+ 





1 

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1 

 i 



47 



44 

 45 



46 

 X 





1 



i 

 1 



Fr 

 Fr 

 Fr 



S 

 S 



s 





 

 



Fr 



X 



X 

 X 



4- 



1 



1 



Je 



Jl 



1 



L 





1 



X 

 X 

 X 



1 



X 



X 

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i 







X 



X 





1 

 1 



X 



1 







1 

 1 









48 









Fr 



Ag 



s 









X 





X 



X 











+ 









1 









49 









Fr 



Je 



Jl 



1 

 1 



1 











1 



1 









X 













1 

 1 











50 









Fr 



Ag 













1 



X 





X 



t 



1 











+ 



+ 















51 







Fr 



Jl 



Ag 



4- 







1 









4- 



1 



