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on which 



reference 



is made. 



(c) "The Wilting Coefficient for Different Plants and Its Indirect De- 

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(d) "Relative Water Requirement of Plants," J. Agric. Research, 

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(e) " Hourly Transpiration Rate on Clear Days as Determined by 

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56. Bristol, B. Muriel, " On the Alga Flora of Some Desiccated English 



Soils: an Important Factor in Soil Biology," Annals of Botany, 

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57. Broounoff, P., " Works on Agricultural Meteorolgy," Petrograd, 1915. 



(Dr. Azzi has translated this in Bull, of Foreign Ag. Intelligence, 

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58. Brown, Adrian J., "The Selective Permeability of the Coverings of the 



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59. Brown, Horace T., and Escombe, F., (a) "On the Variations in the 



Amount of Carbon Dioxide in the Air of Kew during the Years 1898- 



1901," ibid., 118-21 57 



(b) Brown, Horace T., " On the Culture of the Excised Embryo of 

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60. (a) Brown, Percy E., "Bacteriological Studies of Field Soils," Centr. 



Bakt. Par., Abt. II., 1912, xxxv., 234-72 (see also Journ. Ag. Re- 

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(b) Brown, Percy E., and Kellogg, E. H., " Sulfofication in Soils," 

 Iowa Research Bull. 18, 1914 211 



(c) Brown, Percy E., and Johnson, H. W., "Studies in Sulfofication," 

 Soil Sci., 1916, i., 339-62 . . 2ii 



(d) Brown, Percy E., and Smith, R. E., " Bacterial Activities in Frozen 

 Soils," Iowa Research Bull. 4, 1912 279 



(e) Brown, P. E., and Allison, F. E., " Influence of Humus-forming 

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 Iowa Bull. 36, 1916 ; So/7 Sci., 1916, i., 49 213 



61. Buddin, Walter, " Partial Sterilisation of Soil by Volatile and Non- 



volatile Antiseptics," Journ. Agric. Sci., 1914, vi., 417-51 . 266, 295 



62. (a) Burd, John S., " Water Extracts of Soils as Criteria of their Crop- 



producing Power," J. Agr. Research, 1918, xii., 297-310 . . 234, 300 

 (b) Burd, John S., " Rate of Absorption of Soil Constituents at succes- 

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63. Burgess, P. S., " Can we Predict probable Fertility from Soil Biological 



Data? " Soil Sci., 1918, vi., 449-62 . . . . . . 262,263 



64. Cailletet, L., and Lefevre, Jules, " Sur 1'origine du Carbone Assimile" 



par les plantes," Compt. Rend., 1911, clii., 1215-17 .... 15 



65. (a) Cameron, Frank K., and Breazeale, J. F., " The Organic Matter in 



Soils and Subsoils," Journ. Amer. Chem. Soc., 1904, xxvi, 29-45 . 139 



(b) Cameron, Frank K., and Patten, H. E., "The Distribution of 

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 581-93 X 5 6 



(c) Cameron, Frank K., " The Soil Solution, or the Nutrient Medium 



for Plant Growth," Chemical Publishing Co., Easton, Pa. 122, 174, 247 



