§ I. Every unhealthy change in the quality of beer coincides with a development of microscopic germs which are alien to the pure ferment of beer 19
§ II. The absence of change in wort and beer coincides with the absence of foreign organisms 25
CHAPTER II. · ON THE CAUSES OF THE DISEASES WHICH AFFECT BEER AND WORT.
From Studies on Fermentation by Louis Pasteur.
