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A guide to the scientific examination of soils; comprising select methods of mechanical and chemical analysis and physical investigation.

By Wahnschaffe, Felix.
Philadelphia, H.C. Baird & co., 1892 .
xii, [17]-177 p. , For German edition see his Auleitung zur wissenschaftlichen bodenuntersuchung. 395W12A 19 cm..

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Mineralogy simplified. Easy methods of identifying minerals, including ores, by means of the blowpipe, by flame reactions, by the spectroscope, and by humid chemical analysis, based on Prof. von Kobell's Tables for the determination of minerals. With an introduction to modern chemistry.

By Erni, Henry..
Philadelphia, | London, E. & F.N. Spon, H.C. Baird & co; 1885 .
xxiv, [25]-395 p. 21 cm..

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