Memoir 73 



Plate I 



Row A 



Trees 1 to 4, 



and 10, 7, 



8,9 



Row A 

 Trees 11 to 18 



RowB 



Trees 1, 2, 

 and 5 to 10 



RowC 



Trees 1 to 4 

 and 7 to 10 



RowC 

 Trees 11 to 18 



Row D 

 Trees 1 to 10 



RowF 



Trees 1 to 5 

 and 8 to 10 



RowG 



Trees 18 to 13, 

 10, and 9 



EOCTS OF THE PEACH TREES AFFECTED WITH CROWN-GALL WHICH WERE USED IN THE 



EXPERIMENT 



The behavior of these trees in the field is shown in table 2. In each case read from left to right except 

 in the row at the top, where tree 7 is tree 10 of the records and trees S. 9, and 10 are 7, S, and 9 of the records; 

 and in the row at the bottom, where it is necessary to read from right to left. (Special acknowledgment 

 is made to Mr. W. R. Fisher for his technicsl skill in obtaining suitable prints from most unsatisfactory 

 negatives) 



