The reader knows Lieutenant-General Schulenburg; stiff little military gentleman of grave years, nephew of the maypole EMERITA who is called Duchess of Kendal in England. "Had a horse shot under him at Malplaquet;" battlings and experiences enough, before and since. Has real sense, abundant real pedantry; a Prussian soldier every inch. He presided in the Copenick Court-martial; he is deeply concerned in these Crown-Prince difficulties. His Majesty even honors him by expecting he should quietly keep a monitorial eye upon the Crown-Prince;--being his neighbor in those parts; Colonel-Commandant of a regiment of Horse at Landsberg not many miles off. He has just been at Vienna [September, 1731 (_Militair-Lexikon,_ iii. 433).] on some "business", (quasi-diplomatic probably, which can remain unknown to us); and has reported upon it, or otherwise finished it off, at Berlin;--whence rapidly home to Landsberg again. On the way homewards, and after getting home, he writes these three Letters; off-hand and in all privacy, and of course with a business sincerity, to Grumkow;--little thinking they would one day get printed, and wander into these latitudes to be scanned and scrutinized! Undoubtedly an intricate crabbed Document to us; but then an indubitable one. Crown-Prince, Schulenburg himself, and the actual figure of Time and Place, are here mirrored for us, with a business sincerity, in the mind of Schulenburg,--as from an accidental patch of water; ruffled bog-water, in sad twilight, and with sedges and twigs intervening; but under these conditions we do look with our own eyes! Could not one, by any conceivable method, interpret into legibility this abstruse dull Document; and so pick out here and there a glimpse, actual face-to-face view, of Crown-Prince Friedrich in his light-gray frock with the narrow silver tresses, in his eclipsed condition there in the Custrin region? All is very mysterious about him; his inward opinion about all manner of matters, from the GNADENWAHL to the late Double-Marriage Question. Even his outward manner of life, in its flesh-and-blood physiognomy,--we search in vain through tons of dusty lucubration totally without interest, to catch here and there the corner of a feature of it. Let us try Schulenburg. We shall know at any rate that to Grumkow, in the Autumn 1731, these words were luculent and significant: consciously they tell us something of young Friedrich; unconsciously a good deal of Lieutenant-General Schulenburg, who with his strict theologies, his military stiffnesses, his reticent, pipe-clayed, rigorous and yet human ways, is worth looking at, as an antique species extinct in our time. He is just home from Vienna, getting towards his own domicile from Berlin, from Custrin, and has seen the Prince. He writes in a wretched wayside tavern, or post-house, between Custrin and Landsberg,--dates his letter "WIEN (Vienna)," as if he were still in the imperial City, so off-hand is he.