NEW CREATIONS IN PLANT LIFE 
stuck in place, sometimes three or even four 
to a single branch, the pot of melted wax is 
lifted up, the branch end and the graft are 
thickly spread with it, a white cloth is wound 
about the joint—the union is complete; and 
rapidly the sap of the old tree begins sending 
its life-forces up through the new life growing 
upon it. The graft grows on and on until it is 
two or possibly three seasons old; then it puts 
out its own buds and flowers, bears its own 
fruit, wholly different it may be from any 
other fruit growing upon the other branches. 
The union of the graft and the parent tree 
will not be complete unless the cambium of 
the two is merged. This cambium isa layer of 
viscid, mucilaginous substance composed of 
cells, lying between the bark and the wood 
of the tree and from which both derive their 
growth. Mr. Burbank calls it a predigested 
food, for the nourishment of the new graft. 
Sometimes the workman makes a long 
slanting cut instead of cutting the branch off 
square and makes a similar cut in the graft. 
Two slits are then made in each, and the 
tongues of the graft thus formed are forced 
down into the slits of the branch. 
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