since; and this time, as you see, is near nine o'clock, when in truth it is only about four o'clock here, where we are." “I wonder you keep such a watch, Mr. Mulford !”

"I keep it," returned the mate, smiling," because I know it to keep good time. It has the Greenwich time; and, as your watch has the New York time, by comparing them together, it is quite easy to find the longitude of New York." "Do you, then, keep watches to compare with your chronometers?" asked Rose, with interest.

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Certainly not; as that would require a watch for every separate part of the ocean, and then we should only get known longitudes. It would be impracticable, and load a ship with nothing but watches. What we do is this: We set our chronometers at Greenwich, and thus keep the Greenwich true time wherever we go. The greatest attention is paid to the chronometers, to see that they receive no injuries; and usually there are two, and often more of them, to compare one with another, in order to see that they go well. When in the middle of the ocean, for instance, we find the true time of the day at that spot, by ascertaining the height of the sun. This we do by means of our quadrants, or sextants; for, as the sun is always in the zenith at twelve o'clock, nothing is easier than to do this, when the sun can be seen, and an arc of the heavens measured. At the instant the height of the sun is ascertained by one observer, he calls to another, who notes the time on the chro nometer. The difference in these two times, or that of the chronometer and that of the sun, gives the distance in degrees and minutes, between the longitude of Greenwich and that of the place on the ocean where the observer is; and that gives him his longitude. If the difference is three hours and twenty minutes, in time, the distance from Greenwich is fifty degrees of longitude, because the sun rises three hours and twenty minutes sooner in London, than in the fiftieth degree of west longitude."

"A watch is a watch, Rosy," put in the aunt, doggedly -" and time is time.-When it's four o'clock at our house, it's four o'clock at your aunt Sprague's, and it's so all over the world. The world may turn round-I'll not deny it, for your uncle often said as much as that, but it cannot turn in the way Mr. Mulford says, or we should all fall off it, at

night, when it was bottom upwards. No, sir, no; you've started wrong. My poor, dear, late Mr. Budd, always admitted that the world turned round, as the books say; but when I suggested to him the difficulty of keeping things in their places, with the earth upside down, he acknowledged candidly-for he was all candour, I must say that for himand owned that he had made a discovery by means of his barometer, which showed that the world did not turn round in the way you describe, or by rolling over, but by whirling about, as one turns in a dance. You must remember your uncle's telling me this, Rose?"

Rose did remember her uncle's telling her aunt this, as well as a great many other similar prodigies. Captain Budd had married his silly wife on account of her pretty face, and when the novelty of that was over, he often amused himself by inventing all sorts of absurdities, to amuse both her and himself. Among other things, Rose well remembered his quieting her aunt's scruples about falling off the earth, by laying down the theory that the world did not “roll over,' but "whirl round." But Rose did not answer the question. "Objects are kept in their places on the earth by means of attraction," Mulford ventured to say, with a great deal of humility of manner. "I believe it is thought there is no up or down, except as we go from or towards the earth; and that would make the position of the last a matter of indifference, as respects objects keeping on it."

"Attractions are great advantages, I will own, sir, espe cially to our sex. I think it will be acknowledged there has been no want of them in our family, any more than there has been of sense and information. Sense and information we pride ourselves on; attractions being gifts from God, we try to think less of them. But all the attractions in the world could not keep Rosy, here, from falling off the earth, did it ever come bottom upwards. And, mercy on me, where would she fall to!"

Mulford saw that argument was useless, and he confined his remarks, during the rest of the conversation, to showing Rose the manner in which the longitude of a place might be ascertained, with the aid of the chronometer, and by means of observations to get the true time of day, at the particular place itself. Rose was so quick-witted, and already so well

instructed, as easily to comprehend the principles; the details being matters of no great moment to one of her sex and habits. But Mrs. Budd remained antagonist to the last. She obstinately maintained that twelve o'clock was twelve o'clock; or, if there was any difference, "London hours were notoriously later than those of New York."

Against such assertions arguments were obviously useless, and Mulford, perceiving that Rose began to fidget, had sufficient tact to change the conversation altogether.

And still the Molly Swash kept in swift motion. Montauk was by this time abeam, and the little brigantine began to rise and fall, on the long swells of the Atlantic, which now opened before her, in one vast sheet of green and rolling waters. On her right lay the termination of Long Island; a low, rocky cape, with its light, and a few fields in tillage, for the uses of those who tended it. It was the "land's end" of New York, while the island that was heaving up out of the sea, at a distance of about twenty miles to the eastward, was the property of Rhode Island, being called Blok Island. Between the two, the Swash shaped her course for the ocean.

Spike had betrayed uneasiness, as his brig came up with Montauk; but the coast seemed clear, with not even a distant sail in sight, and he came aft, rubbing his hands with delight, speaking cheerfully.

"All right, Mr. Mulford," he cried-"everything shipshape and brister-fashion-not even a smack fishing hereaway, which is a little remarkable. Ha!-what are you staring at, over the quarter, there?"

"Look here, sir, directly in the wake of the setting sun, which we are now opening from the land—is not that a sail?"

"Sail! Impossible, sir. What should a sail be doing in there, so near Montauk-no man ever saw a sail there in his life. It's a spot in the sun, Madam Budd, that my mate has got a glimpse at, and, sailor-like, he mistakes it for a sail! Ha-ha-ha-yes, Harry, it's a spot in the sun.

"It is a spot on the sun, as you say, but it's a spot made by a vessel-and here is a boat pulling towards her, might and main; going from the light, as if carrying news."

It was no longer possible for Spike's hopes to deceive

him. There was a vessel, sure enough; though, when first seen, it was so directly in a line with the fiery orb of the setting sun, as to escape common observation. As the brig went foaming on towards the ocean, however, the black speck was soon brought out of the range of the orb of day, and Spike's glass was instantly levelled at it.

"Just as one might expect, Mr. Mulford," cried the captain, lowering his glass, and looking aloft to see what could be done to help his craft along; "a bloody revenue cutter, as I'm a wicked sinner! There she lies, sir, within musket shot of the shore, hid behind the point, as it might be in waiting for us, with her head to the southward, her helm hard down, topsail aback, and foresail brailed; as wicked looking a thing as Free Trade and Sailor's Rights ever ran from. My life on it, sir, she's been put in that precise spot, in waiting for the Molly to arrive. You see, as we stand on, it places her as handsomely to windward of us, as the heart of man could desire."

"It is a revenue cutter, sir; now she's out of the sun's wake, that is plain enough. And that is her boat, which has been sent to the light to keep a look-out for us. Well, sir, she's to windward; but we have everything set for our course, and as we are fairly abeam, she must be a great traveller to overhaul us."

"I thought these bloody cutters were all down in the Gulf," growled the captain, casting his eyes aloft again, to see that everything drew. "I'm sure the newspapers have mentioned as many as twenty that are down there, and here is one, lying behind Montauk, like a snake in the grass!"

"At any rate, by the time he gets his boat up we shall get the start of him-ay, there he fills and falls off, to go and meet her. He'll soon be after us, Captain Spike, at racing speed."

Everything occurred as those two mariners had foreseen. The revenue cutter, one of the usual fore-top-sail schooners that are employed in that service, up and down the coast, had no sooner hoisted up her boat, than she made sail, a little off the wind, on a line to close with the Swash. As for the brig, she had hauled up to an easy bowline, as she came round Montauk, and was now standing off south southeast, still having the wind at south-west. The weatherly

position of the cutter enabled her to steer rather more than one point freer. At the commencement of this chase, the vessels were about a mile and a half apart, a distance too great to enable the cutter to render the light guns she carried available, and it was obvious from the first, that everything depended on speed. And speed it was, truly; both vessels fairly flying; the Molly Swash having at last met with something very like her match. Half an hour satisfied both Spike and Mulford that, by giving the cutter the advantage of one point in a freer wind, she would certainly get alongside of them, and the alternative was therefore to keep off.

"A starn chase is a long chase, all the world over," cried Spike" edge away, sir; edge away, sir, and bring the cutter well on our quarter."

This order was obeyed; but to the surprise of those in the Swash, the cutter did not exactly follow, though she kept off a little more. Her object seemed to be to maintain her weatherly position, and in this manner the two vessels ran on for an hour longer, until the Swash had made most of the distance between Montauk and Blok Island. Objects were even becoming dimly visible on the last, and the light on the point was just becoming visible, a lone star above a waste of desert, the sun having been down now fully a quarter of an hour, and twilight beginning to draw the curtain of night over the waters.

"A craft under Blok," shouted the look-out, that was still kept aloft as a necessary precaution.

"What sort of a craft?" demanded Spike, fiercely; for the very mention of a sail, at that moment, aroused all his ire. "Arn't you making a frigate out of an apple-orchard?"

"It's the steamer, sir. I can now see her smoke. She's Just clearing the land, on the south side of the island, and seems to be coming round to meet us.”

A long, low, eloquent whistle from the captain, succeeded this announcement. The man aloft was right. It was the steamer, sure enough; and she had been lying hid behind Blok Island, exactly as her consort had been placed behind Montauk, in waiting for their chase to arrive. The result was, to put the Molly Swash in exceeding jeopardy, and the