THe CarRBoN DIOXIDE OF THE Sort AIR 349 
BIBLIOGRAPHY 
AseEerRSON, J. H. Ein Beitrag zur Kenntnis der Natur der Wurzelausschei- 
dungen. Jahrb. wiss. Bot. [Pringsheim] 47:41-56. 1910. 
BarRAKOv, P. The carbon dioxid content of soils during different stages 
of growth’ of plants. Czted in Exp. sta. rec. 23(1910):523. 1911. 
From Zhur. opiutn. agron. 11:321-348. 1910. 
BizzEu, J. A., AND Lyon, T.L. The effect of certain factors on the carbon- 
dioxide content of soil air. Amer. Soc. Agron. Journ. 10:97-112. 1918. 
Deneérain, P.-P., AnD Dremoussy, E. Sur l’oxydation de la matiére 
organique du sol. Ann. agron. 22:305-337. 1896. 
Fopor, J. V. Der Kohlensaéuregehalt der Bodengase. Vrtljschr. 6ffentl. 
Gesund. 7:205. 1875. 
Harrison, W. H., AND Aryer, P. A. SupramMaANtA. The gases of swamp 
rice soils: their composition and relationship to the crop. India 
Dept. Agr. Memoirs, Chem. ser. 3:65-106. 1918. 
HASSELBRING, HeinricH. The relation between the transpiration stream 
and the absorption of salts. Bot. gaz. 57:72-73. 1914. 
Hutcuinson, C. M. Report of the Imperial Agricultural Bacteriologist. 
India Agr. Research Inst. and Coll., Pusa. Rept. 1911-12:78-83. 1912. 
Kossowircu, P. [Russian title.| The quantitative determination of 
carbon dioxide produced by the roots of plants during the period of 
their development. Zhur. opuitn. agron. 5:482-493. (Abstracted by 
J. Davidson.) 1904. 
Lau, E. Beitriige zur Kenntnis der Zusammensetzung der im Acker- 
boden befindlichen Luft. Inaug. Diss., Rostock. 1906. 
Lawes, J . B. Experimental investigation into the amount of water 
given off by plants during their growth; especially in relation to the 
fixation and source of their various constituents. Hort. Soc. London. 
Journ. 5:38-63. 1850. 
Leatuer, J. Watter. Soil gases. India Dept. Agr. Memoirs, Chem. 
ser. 4:85-134. 1915. 
Livincston, Burton Epwarp. Relation of transpiration to growth in 
wheat. Bot. gaz. 40:178-195. 1905. 
Moutscu, Hans. Uber Wurzelausscheidungen und deren Einwirkung 
- auf organische Substanzen. K. Akad. Wiss. [Vienna], Math.-Naturw. 
Cl. Sitzber. 96 (1887) :84-109. 1888. 
