1. morphology   languages and linguistics   structure and form   handwriting and its analysis   teeth   Hint Half-n-half Clue   2. hydrostatics   mathematics of pressures of liquids at rest   stamps   chemical processes in living forms   influence of numbers on human destinies   Half-n-half Clue   3. psychology   fossils   mental behavior of humans and animals   moral principles   mathematics of pressures of liquids at rest   Half-n-half Clue