"On the sixteenth day, April 5th [King Friedrich hurrying from the Mountains that same day, towards Steinau, which took fire with him at night], Boca-Chica Castle and the intricate War-Ships, Booms, and Castles thereabouts (Don Blas running off when the push became intense), are at last got. So that now, through Boca-Chica, we enter the Interior Harbor or Harbors. 'Harbors' which are of wide extent, and deep enough: being in fact a Lake, or rather Pair of Lakes, with Castles (CASTILLO GRANDE, 'Castle Grand,' the chief of them), with War-Ships sunk or afloat, and miscellaneous obstructions: beyond all which, at the farther shore, some five miles off, Carthagena itself does at last lie potentially accessible; and we hope to get in upon Don Blas and it. There ensue five days of intricate sea-work; not much of broadsiding, mainly tugging out of sunk War-Ships, and the like, to get alongside of Castle Grand, which is the chief obstruction. "April 10, Castle Grand itself is got; nobody found in it when we storm. Don Blas and the Spaniards seem much in terror; burning any Ships they still have, near Carthagena; as if there were no chance now left." This is the very day of Mollwitz Battle; near about the hour when Schwerin broke into field-music, and advanced with thunderous glitter against the evening sun! Carthagena Expedition is, at length, fairly in contact with its Problem,--the question rising, 'Do you understand it, then?' "Up to this point, mistakes of management had been made good by obstinate energy of execution; clear victory had gone on so far, the Capture of Carthagena now seemingly at hand. One thing was unfortunate: 'the able Mr. Moor [meritorious Captain of Foot, who, by accident, had spent some study on his business], the one real Engineer we had,' got killed in that Boca-Chica struggle: an end to poor Moor! So that the Siege of Carthagena will have to go on WITHOUT Engineer science henceforth. May be important, that,--who knows? Another thing was still more palpably important: Sea-General Vernon had an undisguised contempt for Land-General Wentworth. 'A mere blockhead, whose Brother has a Borough,' thinks Vernon (himself an Opposition Member, of high-sniffing, angry, not too magnanimous turn);--and withdraws now to his Ships; intimating: 'Do your Problem, then; I have set you down beside it, which was my part of the affair!'--Let us give the attack of Fort Lazar, and end this sad business.