Forest Sciences Commons^™

The Eli Whitney Forest: A Demonstration Of Forestry Practice, Ralph C. Hawley, William Maughan

Yale School of the Environment Bulletin Series

This publication has been prepared as a contribution toward solving some of the forestry problems with which owners of woodland are confronted. Forest conditions and details and methods of forest management on one property, the Eli Whitney Forest, are set forth here in the hope that the recital may provide a helpful object lesson.

The Effect Of Soil Moisture On The Establishment Of Spruce Reproduction In British Columbia, Percy Munson Barr

Yale School of the Environment Bulletin Series

Most of the field work has been conducted at the Aleza Lake Forest Experiment Station, in the valley of the Upper Fraser River, near the city of Prince George [British Columbia].

I. A series of twelve permanent plots (numbers 1 to 12) was established for the purpose of studying the occurrence of natural reproduction on various types of seed bed, under different densities of overwood and on northern and southern aspects. 2. A second series of four plots (numbers 17 to 20) was laid out in logged-off land for the purpose of studying the survival and growth of advance reproduction …

Control Of The White Pine Weevil On The Eli Whitney Forest, William Maughan

Yale School of the Environment Bulletin Series

During the summer of 1930 the author made an investigation to determine the actual results of the control work. The results show that the weevil can be controlled on certain sites. The removal of infested tips brings about a marked reduction in the amount of infestation evident during succeeding years. The reduction first becomes noticeable the second or third year after the work is started. In the stands in which treatment has been completed more than enough acceptable stems have been secured on the medium and better sites. On the poorer sites enough acceptable stems are not secured even though …

Diameter Distribution Series In Evenaged Forest Stands, Walter H. Meyer

Yale School of the Environment Bulletin Series

BOTH in natural and in planted forest stands trees vary greatly in diameter, form, and height, even when the trees are all of the same age. For example, in a natural forest stand of Douglas fir, aged seventy years and located on a poor growing site, the trees may range from 5 to 18 inches in diameter at breast height (4.5 feet above the ground). The numbers of trees in the range of diameter .classes are not equal, but are small in classes at the extremes of the range and large in the central classes. If these numbers were plotted …