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KARL See also: German pharmacist, son of a well-to-do druggist in Coblentz, was See also: born on the 4th of See also: November 1806
.
Being a delicate See also: child he received much of his early See also: education at home, in See also: great See also: part in his See also: father's laboratory
.
To this may be traced much of the skill he showed in devising See also: instruments and methods of analysis
.
At the age of twenty-one he began to study chemistry under Leopold See also: Gmelin, and, after five years spent in See also: Heidelberg, Berlin and See also: Bonn, returned with the degree of Ph.D. to join his father's establishment
.
On the See also: death of his father in 184o he succeeded to the business, retiring from it for scientific leisure in 1857
.
Serious pecuniary losses led him at the age of fifty-seven to become a privaidozent in Bonn, where in 1867 he was appointed, by the See also: direct influence of the emperor, extraordinary professor of See also: pharmacy
.
He died at Bonn on the 28th of See also: September 1879
.
See also: Mohr was the leading scientific pharmacist of his See also: time in See also: Germany, and he was the author of many improvements in See also: analytical processes
.
His methods of volumetric analysis were expounded in his Lehrbuch der chemisch-analytischen Titrirmethode (1855), which won the See also: special See also: commendation of Liebig and has run through many See also: editions
.
His Geschichte der Erde, eine Geologie auf newer Grundlage (1866), also obtained a wide circulation
.
In a paper " Uber die Natur der Warme," published in the Zeitschrift fur Physik in 1837, he gave one of the earliest general statements of the See also: doctrine of the conservation of energy in the words: " besides the 54 known chemical elements there is in the See also: physical See also: world one See also: agent only, and this is called Kraft (energy)
.
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