Page:Popular Science Monthly Volume 83.djvu/599

Rh to an American forester. It was some experimental plantations of American trees begun some 30 years ago. In these plantations, as they are seen to-day, are fine stands of Douglas fir, Engleman spruce, Western cedar, hemlock. white pine and many other American species. Careful measurement of the annual growth of these trees have been

 showing a fine growth of Spruce on either side near Swartzenberg, Saxony.

taken. The results are equally interesting and instructive. In 1911 the increment per acre, including the branchwood, was, for the Douglas fir, something over two cords, and that of the hemlock was a little more than three cords, while the white pine, which stood the highest on the list, gave a yield of very close to four cords per acre. Whether these