152 MISC. PUBLICATION 3 64, U. S. DEPT. OF AGRICULTURE 

 Fisher, R. T. (2999) 



SOIL CHANGES AND SILVICULTURE ON THE HARVARD FOREST. Ecology 9 : 6-11, 



illus. 1928. 



Forsyth, H. Y. (3000) 



tree growth on disturbed soil. Forest Leaves 21 (5) : 67-89. 1927. 



Fuller, G. D. (3001) 



soil as a limiting factor of forests in la salle county, ill. 111. State 

 Acad. Sci. Trans. 12 : 99-102. 1919. 



Geismar, L. M. (3002) 



soil fertility and forest fires. Amer. Lumberman 1940 : 37. 1912. 



Gifford, J. C. (3003) 



forestry on sandy soils. N. Y. Comn. Fisheries, Game and Forests Ann. 

 Rept. 4: 396-417, illus. 1899. 



Geegory, H. E. (3004) 



the relation of geology to forestry. Conn. Forestry Assoc. Pub. 5 : 21-27. 

 1907. 



Griffith, B. G., Hartwell, E. W., and Shaw, J. E. (3005) 



THE EVOLUTION OF SOILS AS AFFECTED BY THE OLD FIELD WHITE PINE — MIXED 



hardwood succession in central new England. Harvard Forest Bull. 

 15, 82 pp., illus. 1930. 



Haig, I. T. (3006) 



colloidal content and belated soil factors as indicators of site quality. 

 Yale Univ. School Forestry Bull. 24, 33 pp., illus. 1929. 



Harmer, P. M. (3007) 



DENSITY OF THE SURFACE FOOT IN FOBEST AND PBAIEIE ON THE LATE WISCONSIN 



DBiFT. Soil Sci. 23: 73-80. 1930. 



Hursh, C. R. (3008) 



litter keeps forest soil PEODUCTivE. South. Lumberman 1734 : 219-221, iilus. 

 1928. 



Isaac. L. A. (3009) 



SEEDLING SURVIVAL ON BURNED AND UNBURNED SURFACES. Jour. Forestry 28: 



569-571. 1930. 

 Jensen, C. A. (3010) 



SOME MUTUAL EFFECTS OF TREE-BOOTS AND GRASSES ON SOILS. Science (n. S. ) 



25: 871-874. 1907. 



Kelley, A. P. (3011) 



soil acidity, an ecological factor. Soil Sci. 16 : 41-54. 1923. 



KlTTEEBGE, JOSEPH, Jr. (3012) 



the use of soil subveys in forestry. 1st Internatl. Cong. Soil Sci., Proc. 

 and Papers 4 : 563-585. 1928. 



Livingston, B. F. (3013) 



THE SOILS AND VEGETATICNAL POSSIBILITIES OF THE MICHIGAN FORESTRY EESEEVE. 



Mich. Forestry Comn. Rept. 1902 : 38-40. 1903. 



Livingston, L. F., and Wackerman, A. E. (3014) 



swamp drainage for forestry. Agr. Engin. 8 (4) : 79-80, illus. 1927. 



Loughbidge, 11. H. (3015) 



tolerance of eucalyptus for alkali. Calif. Agr. Expt. Sta. Bull. 225, 71 

 pp., illus. 1911. 



Lovejoy, P. S. (3016) 



THE EFFECT OF FOBEST FIEES UPON THE SOIL OF THE NORTHERN LAKE STATES. 



Mich. Acad. Sci. Ann. Rept. 22 : 9-20. 1921. 



Lowell, Perceval. (3017) 



the plateau of the san francisco peaks in its effect on tree-life. amer. 

 Geogr. Soc Bull. 41: 257-270, 365-382, illus. 1909. 



Lundberg, Gustaf. (3018) 



drainage of swamp lands for forestry purposes. Jour. Forestry 24 : 19-37, 

 illus. 1926. 



