Selina's subject, quite unaccountably, happened to be naval history. There is no laying down rules as to subjects; you just possess them--or rather, they possess you--and their genesis or protoplasm is rarely to be tracked down. Selina had never so much as seen the sea; but for that matter neither had I ever set foot on the American continent, the by-ways of which I knew so intimately. And just as I, if set down without warning in the middle of the Rocky Mountains, would have been perfectly at home, so Selina, if a genie had dropped her suddenly on Portsmouth Hard, could have given points to most of its frequenters. From the days of Blake down to the death of Nelson (she never condescended further), Selina had taken spiritual part in every notable engagement of the British Navy; and even in the dark days when she had to pick up skirts and flee, chased by an ungallant De Ruyter or Van Tromp, she was yet cheerful in the consciousness that ere long she would be gleefully hammering the fleets of the world, in the glorious times to follow. When that golden period arrived, Selina was busy indeed; and, while loving best to stand where the splinters were flying the thickest, she was also a careful and critical student of seamanship and of manoeuvre. She knew the order in which the great line-of-battle ships moved into action, the vessels they respectively engaged, the moment when each let go its anchor, and which of them had a spring on its cable (while not understanding the phrase, she carefully noted the fact); and she habitually went into an engagement on the quarter-deck of the gallant ship that reserved its fire the longest.