y^^*-^ 



Early staiie of infection in an orchard trci^ ; note jiii'dlcd twi.^s witli withered 

 leaves at tnp. Scene in Lancaster connry, I'enna. — I'liotoumiili hi/ Prof. Collins. 



Comiilete destruction of the chestnut trees in mixed stand. Note healthy con- 

 dition <if trees of other species. Views alons; Long Island Railroad, near Richmond 

 Hill, New York. — I'hufofiriiiih hij Prof. Colli n><. 



