in 1937, by way of an invitation from professor f. a. e. crew, he went to the university of edinburgh, where he spent time working in the institute of animal genetics. upon this return to germany in 1938, he was arrested and imprisoned in the concentration camp at dachau. during the following year, he was deported to scotland, where he resumed his work at the university. due to deteriorated health, he died soon afterwards in march 1940.