Complex sentence: In chemistry he is chiefly remembered in connection with phlogiston theory, the essentials of which, however, he owed to J.J. Becher; and he also propounded a view of fermentation which in some respects resembles that supported by Justus von Liebig a century and half later.
Split into simpler sentences: In chemistry he is chiefly remembered in connection with phlogiston theory, the essentials of which, however, he owed to J.J. Becher. He also propounded a view of fermentation which in some respects resembles that supported by Justus von Liebig a century and half later.