To bring together in systematic and usable form the bulk of the information dealing with Douglas fir logging costs thus far acquired, so as to make it accessible, is the object of this publication.
This report discusses forests and treats the topic in four parts. The first part describes the life of an individual tree, and the second describes individual trees as parts of a forest. The third and fourth parts discuss forests as communities of trees and methods for preventing destruction of forests.
The scope of this thesis consists primarily of
an exposition upon the merits of indirect and. semi-indirect
illumination. In deriving our conclusions, we
have considered two sources of information: firstly,
that of test data from a number of indirect and direct
installations, and. secondly, the opinion of men familiar
with...