DISTRIBUTION OF THE FOSSIL FLORA OF THE ILLINOIS 



COAL FIELDS, 



The following table enumerates all the species of fossil plants known to this 

 time, (March, 1870,) from the Coal Measures of Illinois, and indicates the lo- 

 cation where the specimens representing them have been found. This synopsis 

 of the fossil flora of the Illinois coal fields may serve to elucidate the remarks 

 which have been suggested by the study of this flora. The figures marked on 

 the table show approximately the proportion of specimens which represent each 

 species : 1, for example, for a spe6ies represented by less than five specimens; 

 12 for a species represented by one hundred or more. 



Other localities. 



Lodi, Indiana. 



Neeleyville. 



Alton. 



Alton and Gray vi lie. 



Abounds at Grayville. 

 Gravville. 



Rock Island. 



Still doubtful. 



