KEPLER,JOHANNES KNOCKING AT THE GATE OF C HEMISTRY

Some of the less known works from the 12-yaers stay of Kepler in Pragu e are reminded. Selected parts of the Kepler's publication ''About Six -Angled Snow'' (De Nive sexangula), which is now practically forgotten , are given and commented in detail. Kepler as the first one considere d there the relationships between the geometrical structure of mass an d its external appearance. As he wrote, he knocked at the gate of chem istry in this way.