Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Clemens Alexander Winkler was a German chemist who discovered the element germanium in 1886, solidifying Dmitri Mendeleev's theory of periodicity.Winkler was born in 1838 in Freiberg, Kingdom of Saxony the son of a chemist who had studied under Berzelius. Winkler's early education was at schools in Freiberg, Dresden, and Chemnitz.

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