Finally and not least I hereby acknowledge my obligations to the various writers and publishers whose books and articles I have freely used. As far as possible, appropriate credit is given in the paged references at the end of each chapter.

[Footnote 1:] William Noyes, Handwork in Wood, Peoria, Ill. The Manual Arts Press, 231 pp., $2.

CONTENTS.

CHAPTER
 PAGE
[General Bibliography][4]
I.[The Structure of Wood][9]
II.[Properties of Wood][41]
III.[The Principal Species of American Woods][57]
IV.[The Distribution and Composition of the North American Forests][197]
V.[The Forest Organism][211]
VI.[Natural Enemies of the Forest][229]
VII.[The Exhaustion of the Forest][251]
VIII.[The Use of the Forest][271]
[Appendix][289]
[Index][304]

GENERAL BIBLIOGRAPHY

Apgar, A. G., Trees of the Northern United States. N. Y.: American Book Co., 224 pp. A small book dealing with the botany of trees, giving descriptions of their essential organs, and particularly valuable for the leaf key to the trees. It should be supplemented by Keeler or Hough's Handbook.

Baterden, J. R., Timber. N. Y.: D. Van Nostrand Co., 1908, 351 pp. A description of the timbers of various countries, discussion of timber defects, timber tests, etc.

Bitting, K. G., The Structure of Wood. Wood Craft, 5: 76, 106, 144, 172, June-Sept., '06. A very scholarly and valuable series of articles on wood structure and growth. Excellent microphotographs.

Britton, Nathaniel Lord, North American Trees. N. Y.: Henry Holt & Co., 1908, 894 pp. A description of all the kinds of trees growing independently of cultivation in North America, north of Mexico, and the West Indies. The standard Botany of trees.