"1. Stocking the cut-over land as fully as possible with sugar and
yellow pine.

"2. Securing a second cut within thirty years.

"All cutting should be done under the 'selection system,' which
requires a careful choice of the individual trees to be removed.
Fixed diameter limits and the leaving of any specified number of
seed trees per acre can be very largely disregarded.

"The condition of every sugar and yellow pine on the sale area
should be studied closely to determine whether that tree will be
merchantable thirty years hence, by which time a second cut is
probable. As a rule the trees which will remain merchantable for
another thirty years should be left. Suppressed and crowded trees
which cannot develop should be removed. Under this system of marking,
ordinarily about one-half of the present stand of merchantable
pine would be left uncut. Will it pay?

"On areas where practically all of the pine is over-matured and
would be cut under the rule given above, a sufficient stand must be
left to reseed thoroughly the cut-over land. This requires not less
than four full seed-bearing trees, at least 25 inches in diameter,
per acre. The strongest and thriftiest trees available should be
selected for this purpose, but not less than the number specified
must be left even if every tree will be a total loss before a second
cut is possible.

"Extensive areas of pine timber which are not yet fully mature
should be excluded from the sale. On patches or small areas of