340 
Journal of Agricultural Research 
Vol. IX, No. 9 
(37) - 
1913. Some relations of certain higher plants to the formation of nitrates in 
soils. N. Y. Cornell Agr. Exp. Sta. Mem. 1, p. 1-111, 27 diagr. 
(38) McBeth, I. G., and Smith, N. R. 
1914. The influence of irrigation and crop production on soil nitrification. In 
Centbl. Bakt. [etc.], Abt. 2, Bd. 40, No. 1/8, p; 24-51, 6 fig. 
(39) Mayow, John. 
1907. Medico-Physical Works; being a translation of Tractus quinque Medico- 
Physici, 1674. 331 p., pi. Edinburgh. (Alembic Club Reprints, 
no. 17.) 
(40) Moll, Rudolf. 
1909. Beitrage zur Bio-Chemie des Bodens. 58 p., 6 tab. Weida i. Th., 
Inaug. Diss. Leipzig. Abstract in Exp. Sta. Rec., v. 24, no. 5, p. 430. 
1911. Original not seen. 
(41) Munter, E., and Robson, W. P. 
1913. Uber den Einfluss der Boden und des Wassergehalts auf die Stickstof- 
fumsetzungen. In Centbl. Bakt. [etc.], Abt, 2, Bd. 39, No. 15/17, 
p. 419-440. 
(42) Neish, James. 
1900. On certain conditions affecting the nitrification of soils. In Jour. Ja¬ 
maica Agr. Soc., v. 4, no. 11, p. 645-651. 
(43) Patterson, J. W., and Scott, P. R. 
1912. The influence of soil moisture upon nitrification. In Jour. Dept. Agr. 
y. 10, pt. 5, p. 275-282, illus. 
(44) Pfeiffer, Th. 
1904. Stickstoffsammelnde Bakterien, BracheundRaubbau. /nMitt. Landw. 
Inst. K. Univ. Breslau, Bd. 3, Heft, 1, p. 93-145, 5 pi. 
(45) Quiroga, Modesto. 
1904. The influence of early and late spring plowing upon corn production. 
[Ohio State] Univ. Bui., s. 8, no. 28 (Agr. ser. no. 1), 23 p., 3 charts. 
(46) Reed, H. S., and Williams, Bruce. 
1915. Nitrogen fixation and nitrification in various soil types. Va. Agr. Exp. 
Sta. Tech. Bui. 3, p. 59-80. 
(47) Richardson, A. E. V. 
1913. Variations in nitrate nitrogen in land variously treated. In Jour. Dept. 
Agr. Victoria, v. 11, pt. 7, p. 429-431, 1 diagr. 
(48) Russell, E. J. 
1914. The nature and amount of .the fluctuation in nitrate content of arable 
soils. In Jour. Agr. Sci., v. 6, no. 1, p. 18-57, 2 fig. 
(49) — 
1915. Soil Conditions and Plant Growth, new ed., 190 p., 8 fig. London and 
New York. Bibliography, p. 175-188. 
(50) Schlcesing, Th., Jr. 
1897. Contribution a l’6tude de la nitrification dans lessols. In Compt. Rend. 
* Acad. Sci. [Paris], t. 125, no. 21, p. 824-827. 
(51) Schneidewind, W., Meyer, D., and Munter, F. 
1911. Untersuchungen uber den Stickstoffhaushalt des Bodens. In Fuhlings 
Landw. Ztg., Jahrg. 60, Heft 22, p. 780-791. 
(52) [Sharp, L. T.] 
[1913.] Soil investigations. In Nevada Agr. Exp. Sta. Ann. Rpt. [1912E13, 
p. 24-38. 
(53) Shutt, F. T. 
1901. Nitrification in northwest soils. In Canada Exp. Farms Rpt., 1900, 
p. 159-161. 
