Bul. 186, Bureau of Plant Industry, U. S. Dept. of Agriculture. PLATE VI. 
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Fig. 1.—RADIAL Sec- Fia.2.—EARLY STAGE FIG. 3.—A LATER Fia. 4.—AN OLDER 
TION THROUGH A OF THE SIMPLE STAGE IN THE DE- STAGE OF THE SIM- 
SOFT CROWN-GALL FORM OF HAIRY- VELOPMENT OF THE 7 PLE FORM OF HAirRy- 
IN AN APPLE ROOT ROOT ON AN APPLE SAME FORM AS THAT Root, MANY ROOTS 
GRAFT. SEEDLING. SHOWN IN FIGURE 2. BEING HAIR-LIKE. 
Fia. 5.—RADIAL SECTION THROUGH A Fic. 6.—RADIAL SECTION THROUGH A 
WooLLY KNOT ORIGINATING IN A HARD CROWN-GALL ORIGINATING ON 
WOUND ON THE SCION OF A ROOT- THE LOWER END OF THE SCION OF A 
GRAFTED APPLE TREE. ROOT-GRAFTED APPLE TREE. 
