No. 25. Tree nearly dead from the disease. Only the 

 branches remain alive. Scene near Cold .Spring, New Vork. 

 Collins. 



two lower left-hand 

 -Pliotograph hy Prof. 



No. 20. r'hestnut trees on Long Island. New York, showing the effect of the 

 girdling of the tree hy the chestnut hark disease. — I'hotoc/niiilt hy I'rof. Collins. 



