94 
Nebraska Agricultural Exp. Station, Research Bui. 12 
DESCRIPTION OF PLATE XIII 
A. Making cut in which to insert inoculum. In this instance a 
half-inch wood chisel was used. 
B. Inserting inoculum in wound. 
C. Covering inoculation with sterilized cotton, and covering this 
in turn with a square of paraffined cloth. 
D. Putting on the protective covering of cloth which has been 
saturated with grafting wax. In the upper right-hand corner of C is 
a finished inoculation showing wrapping and zinc label. 
