128 MISC. PUBLICATION 2 81, U. S. DEPT. OF AGRICULTURE 

 Gleason, H. A. (2332) 



THE SIGNIFICANCE OF RAUNKIAER's LAW OF FREQUENCY. Ecology 10: 406- 



408. 1929. 



Goldsmith, G. W. (2333) 



some field instruments and their application. Nebr. Univ. Studies 22: 

 201-258, illus. 1923. 



Graham, S. A. (2334) 



THE NEED FOR STANDARDIZED QUANTITATIVE METHODS IN FOREST BIOLOGY. 



Ecology 10: 245-250. 1929. 

 Greaves, J. E., and Pulley, H. C. (2335) 



THE SOIL VERSUS THE SOLUTION METHOD AS A MEANS OF STUDYING BACTERIAL 



activities in soil. Jour. Agr. Research 43: 905-917, illus. 1931. 

 Greene, R. A. (2336) 



THE APPLICABILITY OF THE AZOTOBACTER (PLAQUE) METHOD FOR DETER- 

 MINING THE FERTILITY REQUIREMENTS OF ARIZONA SOILS. Soil Sci. 34: 



83-93. 1932. 

 Groves, A. B. (2337) 



A PHOTOGRAPHIC LIGHT BOX FOR USE IN AGRICULTURAL RESEARCH. Jour. 



Agr. Research 44: 467-475, illus. 1932. 

 Hanson, H. C. (2338) 



INTENSITY OF GRAZING IN RELATION TO PROXIMITY TO ISOLATION TRANSECTS. 



Ecology 10: 343-346, illus. 1929. 



(2339) 



A COMPARISON OF METHODS OF BOTANICAL ANALYSIS OF THE NATIVE PRAIRIE 



in western north Dakota. Jour. Agr. Research 49: 815-842, illus. 1934. 



and Ball, W. S. (2340) 



AN APPLICATION OF RAUNKIAER's LAW OF FREQUENCE TO GRAZING STUDIES. 



Ecology 9: 467-473, illus. 1928. 



and Love, L. D. (2341) 



COMPARISON OF METHODS OF QUADRATTING. EcologV 11: 734-748, illus. 



1930. 



and Love, L. D. (2342) 



SIZE OF LIST QUADRAT FOR USE IN DETERMINING EFFECTS OF DIFFERENT 

 SYSTEMS OF GRAZING UPON AGROPYRON SMITHII MIXED PRAIRIE. Jour. Agr. 



Research 41: 549-560, illus. 1930. 

 Harper, H. J. (2343) 



A STUDY OF METHODS FOR THE PREPARATION OF PERMANENT SOIL PROFILES. 



Okla. Agr. Expt. Sta. BuU. 201, 15 pp., illus. 1932. 

 Harper, R. M. (2344) 



SOME SUGGESTED IMPROVEMENTS IN CLIMATOLOGICAL GRAPHS. Amer. Met. 



Soc. BuU. 11: 58-62, illus. 1930. 

 Harris, J. A. (2345) 



THE SERVICE OF STATISTICAL FORMULAE IN THE ANALYSIS OF PLOT YIELDS. 



Jour. Amer. Soc. Agron. 18: 247-273. 1926. 



(2346) 



THE APPLICATION OF MATHEMATICAL METHODS TO BIOLOGICAL PROBLEMS. 



Carnegie Inst. Wash. Yearbook 1925: 293-304, illus.; 1926: 273-279. 

 1926-27. 



(2347) 



CRITICISM OF THE LIMITATIONS OF THE STATISTICAL METHOD. JoUI\ Amer, 



Soc. Agron. 22: 263-269. 1930. 



Kuenzel, J., and Cooper, W. S. (2348) 



COMPARISON OF THE PHYSICAL FACTORS OF HABITATS. EcologV 10: 47-66, 



illus. 1929. 

 ■ and Scofield, C. S. (2349) 



FURTHER STUDIES ON THE PERMANENCE OF DIFFERENCES IN THE PLOTS OF 



an experimental field. Jour. Agr. Research 36: 15-40, illus. 1928. 



