In praise of Heinrich Höllerl (1944-2012). -- I feel ashamed to admit it, but I only learnt of his existence today, three years after he died. Höllerl was the world's leading authority on the history of the Bratwurst, that most German of entities, the kind of thing under threat as more and more foreigners invade our lands in search of our wealth and women. Höllerl showed that the Bratwurst was brought to Germany by the Celts. -- So much for the dangers of migration.