THE 



SCIENTIFIC PROCEEDINGS 



OF THE 



ROYAL DUBLIN SOCIETY. 



Yol. XV. (ITS.), No. 23. AUGUST, 1917. 



SPERMOLITHUS DEVONICUS, am. et sp. nov., 

 AND OTHER PTERIDOSPERMS FROM THE 

 UPPER DEVONIAN BEDS AT KILTORCAN, 

 CO. KILKENNY. 



BY 



THOMAS JOHNSON, D.Sc, F.L.S., 



PBOFESSOK OF BOTANY IN THE KOYAL COLLEGE OF SCIENCE FOR IKELAND, DUBLIN. 



(PLATES IX-XIV.) 



[A uthors alone are responsible for all opinions expressed in their Communications.] 



DUBLIN : 



PUBLISHED BY THE ROYAL DUBLIN SOCIETY, 



LEINSTER HOUSE, DUBLIN. 



WILLIAMS AND NOEGATE, 



14, HENRIETTA STREET, COVENT GARDEN, LONDON, W.C. 



1917. 



Price One Shilling and Sixpence. 



