DISEASES OF 



CULTIVATED PLANTS 



AND TREES 



BY 



GEORGE 



MASSEE 



< 



ASSISTANT KEEPER, HERBARIUM, ROYAL BOTANIC GARDENS, KEW 



AUTHOR OF ( A TEXT-BOOK OF PLANT DISEASES,' 'EUROPEAN 



FUNGUS FLORA,' ' BRITISH FUNGUS FLORA,' ' A MONOGRAPH 



OF THE MYXOGASTRES,' ETC. ETC. 



NEW YORK 



THE MACMILLAN COMPANY 



