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Estimates of standing timber are constantly being made governments, operating companies and private survey organizations. The intensity and cost of these surveys vary with the purpose for wlhich thqr are intended and it should be recognized that only what is aid for is obtained. If a

In high-grade lumber fowsts retention of a high proportion of the volume as glwwins stock i s fundamental. Since diameter limit is in vome as a method of cutting control, a simple method of instituting silvicultural treatment would he a sliding scale of dues that would place a premium on the selection of the trees of larger diameter and the leaving of smaller diameters that are, in any case, almost marginal in their yield value. In order to induce silvicultural treatment of our stands the most logical method under existing economic conditions is to make it profitable for the operator to assist in the process.