FEBRUARY, 190G BULLETIN 236 



CORNELL UNIVERSITY 



AGRICULTURAL EXPERIMENT STATION OF 



THE COLLEGE OF AGRICULTURE 



Department of Botany (Extension Work) 



THE BLIGHT CANKER OF APPLE-TREES 



By H, H. 'WHETZEL 



ITHACA, N. Y. 

 PUBLISHED BY THE UNIVERSITY 



12 *77 



