Book digitized by Google from the library of Oxford University and uploaded to the Internet Archive by user tpb.
The conversations of the supplement to the "Gespräche" originally published separately as 3d part ("Nachtrag") and based in part on the manuscript notes written in French by F. J. Soret, are in this translation inserted in their chronological order, and are published in English for the first time. Cf. Translator's pref