The Online Books Page

Books by Henry Erni:

Books in the extended shelves:

• Erni, Henry: Coal oil and petroleum: their origin, history, geology, and chemistry ... (H. C. Baird, 1865) (page images at HathiTrust)
• Erni, Henry: Mineralogy simplified: a short method of determining and classifying minerals, by means of simple chemical experiments in the dry and wet way. (H.C. Baird, 1867), also by Franz von Kobell (page images at HathiTrust)
• Erni, Henry: Mineralogy simplified. Easy methods of identifying minerals, including ores (H. C. Baird & co.; [etc., etc.], 1901) (page images at HathiTrust)
• Erni, Henry: Mineralogy simplified. Easy methods of identifying minerals, including ores, by means of the blow-pipe, by flame reactions, by humid chemical analysis, and by physical tests. (H.C. Baird & co., 1908), also by Amos P. Brown (page images at HathiTrust)
• Erni, Henry: 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. (H.C. Baird & co;, 1885) (page images at HathiTrust)
• Erni, Henry: Mineralogy simplitied. Easy methods of identifying minerals (H.C. Baird & Co, 1885) (page images at HathiTrust)
• Erni, Henry: On food, or Upon what does man live? (Printed by Kinsloe & Rice, 1857) (page images at HathiTrust)

Find more by Henry Erni at your library, or elsewhere.