THE 



SCIENTIFIC PROCEEDINGS 



OF THE 



ROYAL DUBLIN SOCIETY. 



Yol. XIV. (KS.), No. 6. ATJGTJST, 1913. 



THE MAKITIME AND MARINE LICHENS OF 

 HOWTH. 



MATILDA C. KNOWLES. 



[communicated by E. LLOYD PEAEGBR.] 



(PLATES lll.-IX and MAP.) 



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



DUBLIN: 



PUBLISHED BY THE ROYAL DUBLIN SOCIETY, 



LEINSTER HOUSE, DUBLIN. 



WILLIAMS AND NORGATE, 



14, HENRJET'J'A STEEET, COVENT GAEDEN, LONDON. W.C. 



1913. 



Price Four Shillings. 



