Yearbook U. S. Dept. of Agriculture, 1912. PLATE XXXVII 
SMALL CHESTNUT TREE IN POT ABOUT THREE MONTHS AFTER ARTIFICIAL INOCULA- 
TION WITH SUMMER SPORES FROM A PURE CULTURE OF THE FUNGOUS PARASITE. 
(Tree girdled at base, leaves above withered; vigorous suckers growing up from below 
girdled point.) 
