Because of that he had to flee his country and settled in Heidelberg , where in 1866 he received a doctorate of philosophy .
In 1862 he returned to Congress Poland and took part in the January Uprising against Russian rule .
He had to flee his country and settled in Heidelberg , where in 1866 he received a doctorate of philosophy .
In 1862 he returned to Congress Poland and took part in the January Uprising against Russian rule .