Cambridge: John Owen, 1841. 8vo, 424 p., bound in original black cloth with paper spine label. Second edition (stated) of this landmark treatise. Of Liebig Hedrick wrote: "Many men who became leaders in agricultural science on both continents were trained by Liebig . (His) Chemistry . (was a) notable work ."Liebig is considered the father of agricultural chemistry holding that transformation of inorganic into organic substance takes place exclusively in plants. He spurred the experimentation with artificial fertilizers moving from the use of organic matter, maintaining that only the mineral elements of soil were necessary, decrying the need for humus". Spine mended with front spine joint split, Essex Institute bookplate on fpep, else a solid clean copy of a scarce scientific work. Please email any questions and thanks for looking!