From 1816 to 1819 Leo studied at the universities of Breslau, Jena and GÃ¶ttingen, devoting himself more especially to history, philology and theology.
He won the good-will of his employers by devoting himself to the improvement of their manufacturing business, and he kept his hands clean from the prevalent taint of pecuniary transactions with the nawab of the Carnatic. One fact of some interest is not generally known.
Devoting himself next to optics, he produced memoirs which entitle him to a high place among the early, searchers after a true dynamical theory of light.
Matriculating at the university of Gottingen in 1811, he began by devoting himself to astronomy under Carl Friedrich Gauss; but he enlisted in the Hanseatic Legion for the campaign of 1813 - 14, and became lieutenant of artillery in the Prussian service in 1815.
Several companies are devoting all their energies to zinc extraction, and the output is now equal to about 5% of the world's production.