Pupil of Georg Hellmesberger Sr. and Joseph Böhm. 2nd violinist of the Hellmesberger Quartet, led by Joseph Hellmesberger Sr. (1828—1893) from 1849-65, and from 1845-8 violist of its predecessor led by Leopold Jansa (1795—1875). Picture of Hellmesberger Quartet members on wikipedia. This picture dates from after 1869, when Durst was succeded by several 2nd violinists, each serving for a year or two.