126 MISC. PUBLICATION 2 81, U. S. DEFT. OF AGRICULTURE 

 Boutoucos, G. J. (2294) 



THE ALCOHOL METHOD FOR DETERMINING MOISTURE CONTENT OF SOILS. Soil 



Sci. 32: 173-179, fflus. 1931. 



(2295) 



THE DISTILLATION METHOD FOR DETERMINING THE COMBINED WATER AND 



organic matter in soils. Soil Sci. 36: 471-4S4, Ulus. 1933, 



(2296) 



A COMPARISON BETWEEN THE SUCTION METHOD AND THE CENTRIFUGE METHOD 

 FOR DETERMINING THE MOISTURE EQUIVALENT OF SOILS. Soil ScL 40: 



165-171, fflus. 1935. 



.2297) 



A METHOD FOR MAKING MECHANICAL ANALYSIS OF THE ULTIMATE NATURAL 



structure of soils. Soil Sci. 40: 481-485. 1935, 

 and Laudeman, W. A. 229S) 



THE FREEZING-POINT METHOD AS A NEW MEANS OF STUDYING VELOCITY OF 



REACTION BETWEEN SOILS AND CHEMICAL AGENTS AND BEHAVIOR OF 



equilibrium. Mich. Agr. Expt. Sta. Tech. Bull. 37, 32 pp. 1917. 

 and McCool, M. M. (2299) 



THE FREEZING-POINT METHOD AS A NEW MEANS OF MEASURING THE CONCEN- 

 TRATION OF THE SOIL SOLUTION DIRECTLY IN THE SOIL. Mich. Agr, Expt. 



Sta. Tech. Bull. 24, 44 pp , fflus. 1915. 

 and McCool, M. M. 2300 ■ 



FURTHER STUDIES ON THE FREEZING POINT LOWERING OF SOILS. Mich. AgT. 



Expt. Sta. Tech. Bull, 31, 51 pp.. illus. 1916, 

 Braid, K. W. (2302) 



THE MEASUREMENT OF LIGHT FOR ECOLOGICAL PURPOSE. JoUT. Ecol. 11: 



49-63. 1923. 

 Briggs. L. J. (2303) 



ELECTRICAL INSTRUMENTS FOR DETERMINING THE MOISTURE, TEMPERATURE, 

 AND SOLUBLE SALT CONTENT OF SOILS. U. S. Bur. Soils Bull. 15, 35 pp., 



fflus. 1899. 

 and McLane, J. W. 2304 



MOISTURE EQUIVALENT DETERMINATIONS, AND THEIR APPLICATION. Amer. 



Soc. Agron. Proc. 2: 138-147, illus. 1910, 

 Martin, F. O., and Pearce, J. R. (2305^ 



THE CENTRIFUGAL METHOD OF MECHANICAL SOIL ANALYSIS. U. S. BllT. Soils 



Bull. 24, 3S pp., illus. 1904. 

 Brown, B. A., and White, G. C.» 2306 



METHODS OF EXPRESSING THE PRODUCTION OF PASTURES. JoUI, Amer, 



Soc. Agron. 25: 230-231. 1933. 

 Campbell, E. S., and Canfield, R. H. (2307) 



AN IMPROVED PAIR OF SHEARS FOR CLIPPING STUDIES ON QUADRATS. EcologY 



9: 107-108, fflus. 192S. 



Carter, E. G. [2308) 



evaporation from rain gages. U. S. Monthlv Weather Rev. 57: 96. 

 1929. 



Chalkley, H. W,. and Livingston, B. E. (2309) 



ATMOMETRIC RATES READ INSTANTANEOUSLY AND AN AUTOMATIC CONTINUOUS 

 RECORDER FOR RATE FLUCTUATION. Ecology 10: 37-46, fflus. 1929. 



Clements, F. E. (2310) 



research methods in ecology, 334 pp., fflus. Lincoln, Nebr. 1905. 



(2311) 



EXPERIMENTAL METHODS IN ADAPTATION AND MORPHOGENY. Joiir. EcologV 



17: 356-379. 1929. 

 and Goldsmith, G. W. (2312) 



THE PHYTOMETER METHOD IN ECOLOGY: THE PLANT AND COMMUNITY AS 



instruments. 106 pp., illus. 1924. (Carnegie Inst. Wash. Pub. 356.^ 



and Weaver, J. E. 2313' 



transplant quadrats and areas, Carnegie Inst. Wash. Yearbook 21, 

 346 pp., illus. 1922. 





