 Later he endorsed the idea of an outlet for this lake at the near Degerfors (Svea River) proposed by Lennart von Post in the 1920s.The two worked together until 1927 when their relation fell apart.In 1927 and 1928 he was involved in a controversyabout Svea River through opinion pieces in newspapers with Astrid Cleve, a strident outcast of Sweden's geological community.