THE "WILT DISEASE." OR "FLACHERIE," 



OF 



THE GYPSY MOTH. 



WILLIAM REIFF, 



BUSSEY INSTITUTION OF HARVARD UNIVERSITY. 



UNDEK THE DIRECTION OP 



F. W. RANE, STATE FORESTER. 



BOSTON : 



WRIGHT & POTTER PRINTING COMPANY. STATE PRINTERS. 



18 POST OFFICE SQUARE. 



1911. 



