He was the author of numerous papers on organic chemistry.
He returned to Berlin in the same year and focused on chemistry.
He wanted to get away from exclusively local matters and focus on chemistry in everyday life.
This focus on chemistry was unusual for a medical dissertation.
From about 1690 he also supported himself by giving courses of lectures on chemistry.
The brand of film doesn't make any difference, since the numbers are based on chemistry, not marketing.
He is an author of several university level books on inoragnic chemistry.
"Are you going to give us a lecture on chemistry?"
Some university courses on chemistry require students to buy such models as learning material.
They were good at large construction and especially strong on chemistry.
