After graduation he became an assistant at the Botanical Institute of Munich University .
Following in the footsteps of his father 's avocation , after high school Preuss studied plant physiology at the University of Vienna and was awarded a doctoral degree at Munich University in 1911 .
After graduation Preuss became an assistant at the Botanical Institute of Munich University .
Following in the footsteps of his father 's avocation , after high school Preuss studied plant physiology at the University of Vienna and was awarded a doctoral degree at Munich University in 1911 .