Weeks before Friedrich heard of this remarkable Memorial, and ten days before it was brought to paper, there came to Friedrich another unexpected remarkable Document: a LETTER from Kaiser Joseph himself, who is personally running about in these parts, over in Bohemia, endeavoring to bring Army matters to a footing; and is no doubt shocked to find them still in such backwardness, with a Friedrich at hand. The Kaiser's Letter, we perceive, is pilot-balloon to the Kaunitz episcopal Document, and to an actual meeting of Prussian and Austrian Ministers on the Bavarian point; and had been seen to be a salutary measure by an Austria in alarm. It asks, as the Kaunitz Memorial will, though in another style, "Must there be war, then? Is there no possibility left in negotiation and mutual concession? I am your Majesty's friend and admirer; let us try." This was an unexpected and doubtless a welcome thing to Friedrich; who answers eagerly, and in a noble style both of courtesy and of business sense: upon which there followed two other Imperial Letters with their two Royal answers; [In _OEuvres de Frederic,_ (vi. 183-193), Three successive Letters from the Kaiser (of dates, "Olmutz," "Litau," "Konigsgratz," 13th-19th April, 1778), with King's Answers ("Schonwalde," all of them, and 14th-20th April),--totally without interest to the general reader.] and directly afterwards the small Austrian-Prussian Congress we spoke of, Finkenstein and Hertzberg on the Prussian part, Cobenzl on the Austrian (Congress sitting at Berlin), which tried to agree, but could not; and to which Kaunitz's Memorial of April 24th was meant as some helpful sprinkling of presidential quasi-episcopal oil.