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Created page with "== Boris de Zirkoff == '''{{Style S-Small capitals|Mendeleyev, Dmitriy Ivanovich}}'''. Russian chemist, the youngest of a family of seventeen, b. at Tobolsk, Siberia, Feb. 7, 1834; d. at St. Petersburg, Feb. 2, 1907. Attended the gymnasium of his native town; studied science at St. Petersburg, was graduated in chemistry, 1856, subsequently becoming ''privatdozent''. Became, 1863, prof. of chemistry in the technological school at St. Petersburg, and thr..."