  The 1890s brought three major events in Boltzmann's work on statistical physics. The foremost of these was his participation in the 1894 meeting of the British Association for the Advancement of Science (BAAS) in Oxford, where issues in gas theory were lively debated.  Another was his debate with Zermelo, in 1896–1897. The third was the appearance of his two-volume book Lectures in Gas Theory in 1896 and 1898.  for a more extensive discussion of the Debate with Zermelo, see Uffink (2007) and (2013).  