As lumbermen learn more about the value of modern forestry they gradually are coming to practice its principles.
The early lumbermen often made mistakes in estimating the timber yields of the forests.

They also neglected to provide for the future production of the woodlands after the virgin timber was removed.

Those who followed in their steps have learned by these errors what mistakes to avoid.

Our lumbermen lead the world in skill and ingenuity.

They have worked out most efficient methods of felling and logging the trees.