remain intact. The outer ends of the short bolts should have their
washers and nuts slightly embedded in the wood of the tree, so that
the living tissue of the tree may eventually grow over them in such
a way as to hold the bars firmly in place and to exclude moisture
and disease. The washers and nuts on the inner side of the limbs
should also be embedded.

A chain is sometimes advantageously substituted for the middle
section of the bar and, in some cases, where more than two branches
have to be joined together, a ring might take the place of the
middle bar or chain.

Bolts on a tree detract considerably from its natural beauty and
should, therefore, be used only where they are absolutely necessary
for the safety of the tree. They should be placed as high up in the
tree as possible without weakening the limbs.




CHAPTER VII

FORESTRY



STUDY I. WHAT FORESTRY IS AND WHAT IT DOES

Although Forestry is not a new idea but, as a science and an art, has
been applied for nearly two thousand years, there are many persons who