No. 1':;. \t M\ rally stage; infection of twigs in top of trees, at uppt-i' ria,ht- 

 liand side, l.ancaster county, Penna. — rhotogiaph by Prof. CuUius. 



No. -A. 'Ixpe of (iiseased ciu'stuul tree <iii Lmi^ Ishiml, .Ni'w ^'^^l^, shuwiuj 

 characteristic sprouts. — Phntwid/tli hii I'mf. Colli ii.s. 



