From Retzow I learn farther, that Winterfeld, directly on the back of this Conference, took a Tour to the Bohemian Baths, "To Karlsbad, or Toplitz, for one's health;" and wandered about a good deal in those Frontier Mountains of Bohemia, taking notes, taking sketches (not with a picturesque view); and returned by the Saxon Pirna Country, a strange stony labyrinth, which he guessed might possibly be interesting soon. The Saxon Commandant of the Konigstein, lofty Fortress of those parts, strongest in Saxony, was of Winterfeld's acquaintance: Winterfeld called on this Commandant; found his Konigstein too high for cannonading those neighborhoods, but that there was at the base of it a new Work going on; and that the Saxons were, though languidly, endeavoring to bestir themselves in matters military. Their entire Army at present is under 20,000; but, in the course of next Winter, they expect to have it 40,000. Shall be of that force, against Season 1757. No doubt Winterfeld's gatherings and communications had their uses at Potsdam, on his getting home from this Tour to Toplitz. Meanwhile, Klinggraf has had his Audience at Vienna; and has sped as ill as could have been expected. The Answer given was of supercilious brevity; evasive, in effect null, and as good as answering, That there is no answer. Two Accounts we have, as Friedrich successively had them, of this famed passage: FIRST, Klinggraf's own, which is clear, rapid, and stands by the essential; SECOND, an account from the other side of the scenes, furnished by Menzel of Dresden, for Friedrich's behoof and ours; which curiously illustrates the foregoing, and confirms the interpretation Friedrich at once made of it. This is Menzel's account; in other words, the Saxon Envoy at Vienna's, stolen by Menzel.