LIST OF REFERENCES. 
The following citations to the literature of forest ecology are mainly those 
concerned with methodology. A few references are given to descr'ptive works 
in which the methods of obtaining the results are clearly brought out, or in 
which the nature of the problem to be met by the future ecologist is emphasized. 
No attempt has been made to prepare a complete bibliograpny, and the con- 
venience of the average student has received considerable weight, in avoiding, 
especially, foreign language articles. 
GENERAL. 
1. Abbe, Cleveland. Treatise on meteorological apparatus and methods. An- 
nual Report of the Chief Signal Officer for 1887, Appendix 46, Sig- 
nal Service, War Dept, Washington, 1888. 
2. Bates, C. G., Notestein, F. B., and Keplinger, P. Climatic characteristics 
of forest types in the Central Rocky Mountains. Proc. Soc. Am. 
Foresters, IX, 1, Wash., 1914. 
3. Bigelow, F. H. Manual for observers in climatology and evaporation. U. S. 
Weather Bur., 1909, pp. 106. 
4. Boeekee, R. H. Some notes on forest ecology and its problems. Proc. Soc. 
Am. Foresters, X, 4, Washington, 1915. 
5. Bowman, I. Forest physiography. New York, 1911. 
6. Clements, F. E. Research methods in ecology. Lincoln, Nebr., 1905. 
7. Plant physiology and ecology. New York, 1907. 
8. Hann, Julius. Handbook of climatology. (Transl. by R. deC. Ward.) New 
York, pp. 437, 1903. 
9. Harrington, M. W. Review of forest meteorological observations : a study 
preliminary to the discussion of the relation of forests to climate. 
U. S. Forest Serv., Bull. 7, 1893. 
10. Maeriot, Wm. Hints to meteorological observers. Royal Meteorological 
Soc, London, 1911. 
11. Moore, W. L. Descriptive meteorology. New York. pp. 344, 1910. 
12. Pearson, G. A. Reproduction of western yellow pine in the Southwest. 
U. S. Dept. Agr., Forest Serv., Circular 174, 1910. 
13. Meteorological study of parks and timbered areas in the western 
yellow pine forests of Arizona and New Mexico. U. S. Weather 
Bur., Mo. Weather Rev., XLI, pp. 1615-1629, 1913. 
14. Factors controlling the distribution of forest types. Ecology, I, 3, 
1920. 
15. Schimper, A. F. W. Plant geography upon a physiological basis. (Transl. 
by W. R. Fisher), Oxford, pp. 839, 1903. 
16. Shreve, Forrest. The vegetation of a desert mountain range as conditioned 
by climatic factors. Carnegie Institution, Washington, 1915. 
17. Warming. Eug. Ecology of plants. (Transl. by Groom and Balfour.) 
Oxford, pp. 422, 1909. 
202 
