THE 



SCIENTIFIC PROCEEDINGS 



OF THE 



ROYAL DUBLIN SOCIETY. 



Yol. XIII. (KS.), lo. 2. MAECH, 1911. 



CONSIDEEATIONS AND EXPERIMENTS on the 

 SUPPOSED INFECTION of the POTATO CROP 

 WITH THE BLIGHT FUNGUS {PHYTOPHTHORA 

 INFE8TANS) by MEANS of MYCELIUM DERIVED 

 DIRECTLY from the PLANTED TUBERS. 



BY 



GEORGE H. PETHYBRIDGE, B.Sc, Ph.D., 



ECONOMIC BOTANIST TO THE DEPAETMENT OF AGEIOULTUKE AND TECHNICAL INSTKUCTION 



FOE lEELAND. 



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



DUBLIN : 



PUELISHED BY THE ROYAL DUBLIN SOCIETY, 

 LEINSTER HOUSE, DUBLIN. 

 WILLIAMS AND NORGATE, 

 14, HENRIETTA STREET, COVENT GARDEN, LONDON, W^ps-'TTConian /flsw""^ 



i9n. A^ " ^^^ 



AUG 14 



Price One Shillinq. V 'i^'' 



