Complex sentence: Convinced by his mother to study natural sciences instead of medicine, in 1862 he tried to study biology at the University of Würzburg, but the German academic session would not start by the end of the year.
Split into simpler sentences: Convinced by his mother to study natural sciences instead of medicine, in 1862 he tried to study biology at the University of Würzburg. But the German academic session would not start by the end of the year.