1. Geschichte   zoology   geology   geometry   history   Hint Half-n-half Clue   2. Philosophie   astronomy   philosophy   trigonometry   zoology   Half-n-half Clue   3. Infinitesmalrechnung   calculus   geography   biology   zoology   Half-n-half Clue   4. Chemie   biology   chemistry   physics   zoology   Half-n-half Clue   5. Erdkunde   calculus   zoology   geography   physics   Half-n-half Clue   6. Physik   physics   geometry   chemistry   astronomy   Half-n-half Clue   7. Psychologie   calculus   psychology   botany   trigonometry   Half-n-half Clue