It is especially adapted to mixed
woods, as it permits securing for
each species the most desirable
light conditions by making the
openings larger or smaller, accord-
ing as the species we wish to favor
in a particular group demand more
or less shade. Further, when dif-
ferent species are ripe for regener-
ation at different times, this plan
makes it }K>ssible to take them in
hand as needed. Again, we can
begin with one group or we can
take in hand several groups simultaneously, as may be desirable and ])racticable.
We start our groups of new crop either where a young growth is already on the ground,
enlarging around it, or where old timber has reached its highest usefulness and should be cut in
order that we may not lose the larger growth which young trees would make; or else we choose a
place which is but poorly stocked, where, if it is not regenerated, the soil is likely to deteriorate
further. The choice is affected further by the consideration that dry situations should be taken
in hand earlier than those in which the soil and site are more favorable, and that some si>ecies
reach maturity and highest use value earlier than others and should therefore be reproduced
earlier. In short, we begin the regeneration when and where the necessity for it exists, or where
the young crop has the best chance to start most satisfactorily with the least artificial aid. Of
course advantage should be taken of the occurrence of seed years, which come at dili'erent inter-
vals with different species.
