FOSSIL PLANTS 



A TEXT-BOOK FOR STUDENTS 

 OF BOTANY AND GEOLOGY 



BY 



A. C. SEWARD 



M.A., F.R.S., HON. Sc.D. DUBLIN 



PROFESSOR OF BOTANY IN THE UNIVERSITY ; 

 MASTER OF DOWNING COLLEGE AND HONORARY 

 FELLOW OF EMMANUEL COLLEGE, CAMBRIDGE 



WITH 190 ILLUSTRATIONS 



VOLUME IV 



UNKGOALES, CONIFERALES, GNETALES 



CAMBRIDGE : 



AT THE UNIVERSITY PRESS 

 1919 



LIBRARY 



UNIVERSITY OF CALIFORNIA 

 DAVIR 



