§ I. On the relations existing between oxygen and yeast 235
§ II. Fermentation in saccharine fruits immersed in carbonic acid gas 266
§ III. Reply to certain critical observations of the German naturalists, Oscar Brefeld and Moritz Traube 279
§ IV. Fermentation of dextro-tartrate of lime 284
§ V. Another example of life without air.—Fermentation of lactate of lime 292
§ VI. Reply to the critical observations of Liebig, published in 1870 316
