Complex sentence: Chandler was born in New Bedford, Massachusetts, on December 13,1841, was educated at Union College, and from 1861 to 1867 was chemist to various companies, and from 1868 to 1871 instructor in chemistry at the Columbia School of Mines.
Split into simpler sentences: Chandler was born in New Bedford, Massachusetts, on December 13,1841. From 1868 to 1871 Chandler was an instructor in chemistry at the Columbia School of Mines.