Side Graft in Position
The side graft is made by bending a branch and making an oblique incision with a knife. The cion is cut in wedge shape as for a cleft graft, and it is of course inserted in such a way as to bring the cambium layers in contact. The process is completed by waxing and bandaging as with the other forms of grafting.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 3 Chapter 5