. A treatise on pruning forest and ornamental - up and throw down the workman. It is an in-dispensable condition of the prompt healing over andperfect circulation of sap that all wounds should beevenly cut and shaped as nearly as possible to thetrunk of the tree. In order to secure this condition,the operation of amputating a branch should be com- 36 TREE PRUNING. menced by making a notch on its lower side (A, ). This notch should reach the middle of the. Fig. 29. — Method of preventinginjury from the fall of a heavybranch by cutting notches on thelower and upper sides.

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectpruning, bookyear1906