CHAPTER V

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THE ALCOHOLIC FERMENTS.

§ I. On the origin of ferment 143

§ II. On “spontaneous” ferment 182

§ III. On “high” and “low” ferments 186

§ IV. On the existence and production of other species of ferment 196

§ V. On a new race of alcoholic ferments: Aërobian ferments 205

§ VI. The purification of commercial yeasts 219

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