PLATE X. 
Bul. 186, Bureau of Plant Industry, U. S. Dept. of Agriculture. 
A. A Row OF COLLINS APPLE TREES DISEASED 
TYPICAL ROWS OF TREES IN ORCHARD 1: 
A Row 
B, 
OF THE SAME VARIETY, PLANTED AT THE SAME TIME, BUT WITH HEALTHY Roots. 
GALL WHEN PLANTED IN THE ORCHARD; 
HARD FORM OF CROWN 
WITH THE 
