THE 



SCIENTIFIC PROCEEDINGS 



OF THE 



ROYAL DUBLIN SOCIETY. 



Vol. XV. (I.S.), lo. 30. AUGUST, 1918. 



A DISEASE OF FLAX SEEDLINGS CAUSED BY 

 A SPECIES OF COLLETOTEICHUM, AND 

 TEANSMITTED BY INFECTED SEED. 



BY 



GEOEGE H. PETHYBEIDGE, B.Sc, Ph.D., 



ECONOMIC BOTANIST TO THE DEPARTMENT OF AGRICULTURE AND TECHNICAL 

 INSTRUCTION FOR IRELAND ; 



AND 



l..,v i . - V, i, „ !) UG ' ST919 



ASSISTANT IN THE SEEDS AND PLANT DISEASE DIVISION OF THE DEPARTBIENT.N^j 1} a I M. 



(PLATES XIX. and XX.) 



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



DUBLIN : 



PUBLISHED BY THE EOYAL DUBLIN SOCIETY, 



LEINSTEK HODSE, DUBLIN. 



WILLIAMS AND NORGATE, 



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



1918. 



Price One Shilling and Sixpence. 



