Lawes, John Bennett

Sir John Bennett Lawes (1814-1900), a pupil of Daubeny in Oxford, was a small land-owner. He took out a patent in 1842 for the preparation of superphosphate of lime by the action of sulphuric acid on coprolites, apatite etc., and began manufacture in 1843 he sold the factories etc. in 1872, but continued to be interested in technical chemistry. John Stevens Henslow, professor of botany in Cambridge, found that coprolites contain 56 to 61 p.c. of calcium phosphate. Sir Joseph Henry Gilbert (1817-1901), a pupil of Liebig, after academic work, experimented on dyeing and calico-printing in the Manchester district and then joined Lawes in 1843. ... 

S American physician Crawford Long first uses ether as an anesthetic. English agricultural scientist Sir John Bennett Lawes develops the artificial fertilizer superphosphate,... 

English agricultural scientist Sir John Bennett Lawes patents the process of manufacturing superphosphate. Swedish chemist Carl Gustaf Mosander identifies the elements erbium and terbium. 

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