LITERATURE CITED. 



Babinet, J. 



1848. Note sur un atmidoscope. Compt. Rend. 27 : 529-30. 

 Bbiggs, L. J., F. O. Martin, and J. R. Pearce. 



1904. The centrifugal method of mechanical soil analysis. U. S. Dept. Agric, Bur. Soils 

 Bull. 24. 

 Brigqs, L. J., and A. G. McCall. 



1904. An artificial root for inducing capillary movement of soil moisture. Science n. s. 

 20: 566-9. 

 Brigqs, L. J., and J. W. McLane. 



1907. The moisture equivalent of soils. U. S. Dept. Agric, Bur. Soils Bull. 45. 

 Briggs, L. J., and H. L. Shantz. 



1911. A wax seal method for determining the lower limit of available soil moisture. Bot. 



Gaz. 51: 210-19. 



1912. (1) Application of wilting coefficient determinations in agronomic investigations. 



Proc. Amer. Soc. Agron. 3: 250-60. 



(2) The wilting coefficient and its indirect determination. Bot. Gaz. 53: 20-37. 



(3) The relative wilting coefficients for different plants. Bot. Gaz. 53: 229-35. 



(4) The wilting coefficient for different plants and its indirect determination. U. S. 



Dept. Agric, Bur. Plant Ind. Bull. 230. 



1913. Die relativen Welkungskoeffizienten verschiedener Pflanzen. Flora 105: 224-40. 

 Caldwell, J. S. 



1913. The relation of environmental conditions to the phenomenon of permanent wilting in 

 plants. Physiol. Res. 1: 1-56. 

 Cameron, F. K., and F. E. Gallagher. 



1908. Moisture content and physical condition of soils. U. S. Dept. Agric, Bur. Soils 



BuU. 50. 

 Crump, W. B. 



1913. Notes on water content and the wilting point. Jour. Ecol. 1 : 96-100. 

 Dachnowski, a. 



1914. Transpiration in relation to growth and to the successional and geographic distribu- 



tion of plants. Ohio Naturalist 14: 241-51. 

 Dixon, H. H. 



1909. Transpiration and the ascent of sap. Prog. Rei Bot. 3: 1-66. 

 Free, E. E. 



1912. Studies in soil physics. Plant World 14: 29-39, 59-66, 110-19, 164-76, 186-90. Also 



reprinted, repaged. Tucson. 1912. 

 Harvey, E. M. 



1913. The action of the rain-correcting atmometer. Plant World 16: 89-93. 

 Hawkins, Lon A. 



1910. The porous clay cup for the automatic watering of plants. Plant World 13: 220-27. 

 HiLGARD, E. W. 



1912. Soils, their formation, properties, composition, and relations to climate and plant 

 growth in the humid and arid regions. New York and London 

 Livingston, B. E. 



1906. (1) The relation of desert plants to soil moisture and to evaporation. Carnegie Inst. 



Wash. Pub. 50. Washington. 

 (2) Note on the relation between growth of roots and of tops in wheat. Bot. Gaz. 

 41: 139-43. 



1907. Relative transpiration in cacti. Plant World 10: 110-14. 



1908. A method for controlling plant moisture. Plant World 11: 39-40. 



1909. (1) Roles of the soil in limiting plant activities. Plant World 12: 49-53. 



(2) Present problems of physiological plant ecology. Amer. Nat. 43: 369-77. The 

 essentials of this paper appeared also, under the same title, in Plant World 

 12: 41-6. 1909. 



1910. (1) A rain-correcting atmometer for ecological instrumentation. Plant World 13: 



79-82. 

 (2) Operation of the porous cup atmometer. Plant World 13: 111-18. 



1911. (1) A radio-atmometer for measuring light intensity. Plant World 14: 96-9. 



(2) Light intensity and transpiration. Bot. Gaz. 52: 418-38. 



(3) The relation of the osmotic pressure of the cell sap in plants to arid habitats. 



Plant World 14: 153-64. 



1912. (1) Present problems in soil physics as related to plant activities. Amer. Nat. 46: 



294-301. 

 (2) A rotating table for standardizing porous cup atmometers. Plant World 15: 

 157-62, 



47 



