Atkins — Bibliography. 429 



BIBLIOGRAPHY.' 



Alway, F. J., 1920. — 1. Agricultural value and reclamation of Minnesota 



peat soils. Univ. of Minnesota Agr. Expt. Sta. Bull. 188, 



1920. 2. Eeport of Golden Valley peat experimental fields. Loc. cit., 



Bull. 194. 

 Amks, J. W., and Boltz, G. E., 1916. — Sulfur in relation to soils and crops. 



Ohio Agr. Expt. Sta. Bull. 292, p. 221. 

 Ames, J. W., and Richmond, T. E., 1918. — Effect of sulfofication and nitrifica- 

 tion on rock phosphate. Soil Sci., 6, 351. 

 Angelstein, U., 1911. — Uber die Kohlensaureassimilation submerser 



Wasserpflanzen in Bikarbonat-und Karbonatlosungen. Beit. z. Biol. 



d. Pflanzen, 10, 87-117. 

 Armstkong, H. E., and Gosney, H. W., 1913, 1914. — Studies on enzyme 



action. Lipase 3 and 4. Proc. R. Soc, 86b, 586, and 88b, 176. 

 Aerhenius, 0., 1920. — Ocologische Studien in den Stockholmer Scharen. 



Stockholm. 

 Aston, B. C, 1916. — Lime and magnesia in New Zealand soils. J. Agr. 



N.Z., 12, 47, and Expt. Sta. Rec, 35, 715. 

 Atkiks, W. E. G., 1921. — The hydrogen ion concentration of some Indian 



soils and plant juices. Imp. Dept. of Agric, India. Pusa Series. 

 Atkins, W. E. G., 1921. — Eolation of hydrogen ion concentration of the soil 



to plant distribution. Nature, Sept. 15, 108, 80. 

 Bayliss, W. M., 1915. — Principles of general physiology. London. 

 Beans, H. T., and Oakes, E. T., 1920. — The determination of the hydrogen 



ion concentration in pure water by a method for measuring the 



electro-motive force of concentration cells of high internal resistance. 



J. Amer. Chem. Soc, 1920, 42, 2116. 

 Bjerrum, N., and Gjaldbaek, J. K., 1919. — Examination of the factors which 



determine the reaction of the soil. Kong. Vet.-og. Landbohojskole 



Aarskr., 48-91. 

 BODINE, J. H., 1921. — Changes in. hydrogen ion concentration and titratable 



acidity and alkalinity of hay and soil cultures. Biol. Bull. 41, No. 2 

 Brenchley, W. E., 1911, 1912, 1913.— The weeds of arable land. Ann. Bot. 



25, 155 ; 26, 95 ; and 27, 141. 



' With but few exceptions, references to be found in Clark's (1920) list have been 

 otnittgd here, 



