Neill, in his Tour through Orkney and Shetland," "we saw the prodigious effects of a late winter storm: many great stones, one of them of several tons weight, had been tossed up a precipice twenty or thirty feet high, and laid fairly on the green sward." There is something farther worthy of notice in the stone of which the two boulders of the Dog-stack are composed. No species of rock occurs more abundantly in the embedded pebbles of this ancient conglomerate than rocks of the trap family. We find in it trap-porphyries, greenstones, clinkstones, basalts, and amygdaloids, largely mingled with fragments of the granitic, clay-slate, and quartz rocks. The Plutonic agencies must have been active in the locality for periods amazingly protracted; and many of the masses protruded at a very early time seem identical in their composition with rocks of the trap family, which in other parts of the country we find referred to much later eras. There occur in this deposit rolled pebbles of a basalt, which in the neighborhood of Edinburgh would be deemed considerably more modern than the times of the Mountain Limestone, and in the Isle of Skye, considerably more modern than the times of the Oölite.

The sun-light was showering its last slant rays on island and loch, and then retreating upwards along the higher hills, chased by the shadows, as our boat quitted the bay of Oban, and stretched northwards, along the end of green Lismore, for the Sound of Mull. We had just enough of day left, as we reached mid sea, to show us the gray fronts of the three ancient castles, which at this point may be at once seen from the deck, Dunolly, Duart, and Dunstaffnage; and enough left us as we entered the Sound, to show, and barely show, the Lady Rock, famous in tradition, and made classic by the pen of Campbell, raising its black back amid the tides, like a

belated porpoise. And then twilight deepened into night, and we went snorting through the Strait with a stream of green light curling off from either bow in the calm, towards the high dim land, that seemed standing up on both sides like tall hedges over a green lane. We entered the Bay of Tobermory about midnight, and cast anchor amid a group of little vessels. An exceedingly small boat shot out from the side of a yacht of rather diminutive proportions, but tautly rigged for her size, and bearing an outrigger astern. The water this evening was full of phosphoric matter, and it gleamed and sparkled around the little boat like a northern aurora around a dark cloudlet. There was just light enough to show that the oars were plied by a sailor-like man in a Guernsey frock, and that another sailor-like man, the skipper, mayhap,attired in a cap and pea-jacket, stood in the stern. The man in the Guernsey frock was John Stewart, sole mate and half the crew of the Free Church yacht Betsey; and the skipper-like man in the pea-jacket was my friend the minister of the Protestants of Small Isles. In five minutes more I was sitting with Mr. Elder beside the little iron stove in the cabin of the Betsey; and the minister, divested of his cap and jacket, but still looking the veritable skipper to admiration, was busied in making us a rather late tea.

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The cabin, my home for the greater part of the three following weeks, and that of my friend for the greater part of the previous twelvemonth, I found to be an apartment about twice the size of a common bed, and just lofty enough under the beams to permit a man of five feet eleven to stand erect in his night-cap. A large table, lashed to the floor, furnished with tiers of drawers of all sorts and sizes, and bearing a writing desk bound to it a-top, occupied the middle space, leaving just room enough

for a person to pass between its edges and the narrow coffin-like beds in the sides, and space enough at its foreend for two seats in front of the stove. A jealously barred skylight opened above; and there depended from it this evening a close lantern-looking lamp, sufficiently valuable, no doubt, in foul weather, but dreary and dim on the occasions when all one really wished from it was light. The peculiar furniture of the place gave evidence to the mixed nature of my friend's employment. A well-thumbed chart of the Western Islands lay across an equally wellthumbed volume of Henry's "Commentary." There was a Polyglot and a spy-glass in one corner, and a copy of Calvin's "Institutes," with the latest edition of "The Coaster's Sailing Directions," in another; while in an adjoining state-room, nearly large enough to accommodate an arm-chair, if the chair could have but contrived to get into it, I caught a glimpse of my friend's printing press and his case of types, canopied overhead by the blue ancient of the vessel, bearing, in stately six-inch letters of white bunting, the legend, "FREE CHURCH YACHT." A door opened, which communicated with the forecastle, and John Stewart, stooping very much, to accommodate himself to the low-roofed passage, thrust in a plate of fresh herrings, splendidly toasted, to give substantiality and relish to our tea. The little rude forecastle, a considerably smaller apartment than the cabin, was all a-glow with the bright fire in the coppers, itself invisible; we could see the chain-cable dangling from the hatchway to the floor, and John Stewart's companion, a powerful-looking, handsome young man, with broad bare breast, and in his shirt-sleeves, squatted full in front of the blaze, like the household goblin described by Milton, or the "Christmas Present" of Dickens. Mr. Elder left us for the steamer, in which he prosecuted his voyage next morning to Skye; and we

tumbled in, each to his narrow bed,— comfortable enough sort of resting places, though not over soft; and slept so soundly, that we failed to mark Mr. Elder's return for a few seconds, a little after daybreak. I found at my bedside, when I awoke, a fragment of rock which he had brought from the shore, charged with Liasic fossils; and a note he had written, to say that the deposit to which it belonged occurred in the trap immediately above the village-mill; and further, to call my attention to a house near the middle of the village, built of a mouldering red sandstone, which had been found in situ in digging the foundations. I had but little time for the work of exploration in Mull, and the information thus kindly rendered enabled me to economize it.

The village of Tobermory resembles that of Oban. A quiet bay has its secure island-breakwater in front; a line of tall, well-built houses, not in the least rural in their aspect, but that seem rather as if they had been transported from the centre of some stately city entire and at once, sweeps round its inner inflection, like a bent bow; and an amphitheatre of mingled rock and wood rises behind. With all its beauty, however, there hangs about the village an air of melancholy. Like some of the other. western coast villages, it seems not to have grown, piecemeal, as a village ought, but to have been made wholesale, as Frankenstein made his man; and to be ever asking, and never more incessantly than when it is at its quietest, why it should have been made at all? The remains of the Florida, a gallant Spanish ship, lie off it shores, a wreck of the Invincible Armada, "deep whelmed," according to Thompson,

"What time,

Snatched sudden by the vengeful blast,
The scattered vessels drove, and on blind shelve,

And pointed rock that marks th' indented shore,
Relentless dashed, where loud the northern main
Howls through the fractured Caledonian isles."

Macculloch relates, that there was an attempt made, rather more than a century ago, to weigh up the Florida, which ended in the weighing up of merely a few of her guns, some of them of iron greatly corroded; and that, on scraping them, they became so hot under the hand that they could not be touched, but that they lost this curious property after a few hours' exposure to the air. There have since been repeated instances elsewhere, he adds, of the same phenomenon, and chemistry has lent its solution of the principles on which it occurs; but, in the year 1740, ere the riddle was read, it must have been deemed a thoroughly magical one by the simple islanders of Mull. It would seem as if the guns, heated in the contest with Drake, Hawkins, and Frobisher, had again kindled, under some supernatural influence, with the intense glow of the lost battle.

The morning was showery; but it cleared up a little after ten, and we landed to explore. We found the mill a little to the south of the village, where a small stream descends, all foam and uproar, from the higher grounds along a rocky channel half-hidden by brushwood; and the Liasic bed occurs in an exposed front directly over it, coped by a thick bed of amygdaloidal trap. The organisms are numerous; and, when we dig into the bank beyond the reach of the weathering influences, we find them delicately preserved, though after a fashion that renders difficult their safe removal. Originally the bed must have existed as a brown argillaceous mud, somewhat resembling that which forms in the course of years, under a scalp of muscles; and it has hardened into a more silt-like clay, in which the fossils occur, not as petrifactions,