Referencing Post # 32: You are really MOST likely correct in your "overheating" comment, Robert! Most Russian palaces were notorious for their excessive heat, especially on formal occasions. Banks of flowers and even potted palm trees were in evidence. Additionally consider the body heat factor of the masses of participants, weighed down with tight, heavy clothing, the dancing, etc.
Even today, those of us who have spent/spend time in Russia in the winter, know of the INTENSE interior heat. I, myself, got up one night in one of the guest bedrooms at friends' home to open one of the (smaller,upper) double-paned windows for relief, with snow coming down outside. Less than two hours later I closed it! I cannot remember straightaway the source (possibly Lord Frederick Hamilton) of a quote that remarked in so many words, "Russians like to pretend that they live at times in a semi-tropical climate !" Regards, AP.