1S59.] DAWSON DEVOin:!^ PLANTS. 



Fig. 1 d. Fig. 1 c. 



Kg. 1 i. 



Fig. 1 e. 



Fig. 1 h. 



Fig. 1 h. 



Fig. 1. Psilophyton princeps. a, rhizome ; b, stem ; c, c^, termination of branches ; 

 <?, vernation; e, fructification; /, stem, twice nat. size; g, areole of 

 rhizome ; k, large stem, nat. size ; i, restoration. 



2m2 



