Bui. 250, U. S. Dept. 



)f Agriculture. 







Plate V. 







# 





^^ I 









-j&zBs^k 



mm 







^L 



Hsi K/J 



HSs| 















25y*Sj 



3?^ " * 







•i 



Hr 







Fig. 1.— Normal Hemlock Foliage, Photographed June 20, 1914. 

 (Original.) 



^£^•3? 









V'^^i^^ vl ^ Br^r^lr 



^^fflt 



* \ «£m/* 







Rill ^'•^jfc^' ' 



^. <jE-^. V \^ 







^^^JTjm]/ |fj^! 









''MMM 



t^Wf 









Fig. 2.— Hemlock Twig Partly Defoliated by Fourth-Stage Gipsy- 

 Moth Larv/e; Photographed June 20, 1914. 

 This tree was stripped of foliage before midsummer. (Original. ) 



WORK OF GIPSY-MOTH LARV/E IN HEMLOCK. 



