Identifier: isolationofharmf53schr (find matches)
Title: The isolation of harmful organic substances from soils
Year: 1909 (1900s)
Authors: Schreiner, Oswald, b. 1875 Shorey, Edmund C. (Edmund Cecil), 1865-1939 United States. Division of Agricultural Soils
Subjects: Soils
Publisher: Washington, D.C. : U.S. G.P.O.
Contributing Library: U.S. Department of Agriculture, National Agricultural Library
Digitizing Sponsor: U.S. Department of Agriculture, National Agricultural Library

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
plex molecules offats and readily decomposed lecithins is present in all living parts ofplants; nitrous acid, by which oleic acid is changed to elaidic acid,is constantly being formed in soils, either as a product of denitri-fication or as one of the stages in nitrification; and, finally, there areoxidizing agents—the air, enzymes hi living roots, and micro-organisms. SEPARATION OF OTHER ORGANIC COMPOUNDS FROM SOILS. In the course of the examination of other soils for the presence of thecompounds already described there have been obtained a numberof bodies, some of which are undoubtedly mixtures, while othersare evidently single, definite compounds. Two of these latter havebeen sufficiently studied to be mentioned here. The soil from whichthese bodies were obtained was from North Dakota, the Marshallclay, a black soil similar to the chernozen of Russia, containing10.6 per cent organic matter and 0.51 per cent nitrogen. Bui. 53, Bureau of Soils, U. S. Dept. of Agriculture. Plate III.
Text Appearing After Image:
Fig. 1.—Crystals of Agrosterol Obtained from Soils.

Note About Images