in the days of the coal-money currency, had taken a squandering fit at Sanday Bay, and tossed the dingy contents of his treasure-chest by shovelfuls upon the rocks. Mr. Dick found in this locality some of his finest specimens, one of which the inner side of the skull-cap of a Holoptychius, with every plate occupying its proper place, and the large angular holes through which the eyes looked out still entire

I trust to be able by and by to present to the public in a good engraving. There occur jaws, plates, scales, spines, the remains of fucoids, too, of great size and in vast abundance. Mr. Dick has disinterred from among the rocks of Sanday Bay flattened carbonaceous stems four inches in diameter. We are still within an hour's walk of Thurso but in that brief hour how many marvels have we witnessed! - how vast an amount of the vital mechanisms of a perished creation have we not passed over! Our walk has been along ranges of sepulchres, greatly more wonderful than those of Thebes or Petræa, and mayhap a thousand times more ancient. There is no lack of life along the shores of the solitary little bay. The shriek of the sparrow-hawk mingles from the cliffs with the hoarse deep croak of the raven; the cormorant on some wave-encircled ledge, hangs out his dark wing to the breeze; the spotted diver, plying his vocation on the shallows beyond, dives and then appears, and dives and appears again, and we see the silver glitter of scales from his beak; and far away in the offing the sunlight falls on a scull of seagulls, that flutter upwards, downwards, and athwart, now in the air, thick as midges over some forest-brook in an evening of midsummer.

But we again pass onwards, amid a wild ruinous scene of abrupt faults, detached fragments of rocks, and reversed strata: again the ledges assume their ordinary position and aspect, and we rise from lower to higher and still higher beds in the formation, for such, as I have already re

marked, is the general arrangement from west to east, along the northern coast of Caithness, of the Old Red Sandstone. The great Conglomerate base of the formation we find largely developed at Port Skerry, just where the western boundary line of the county divides it from the county of Sutherland; its thick upper coping of sandstone we see forming the tall cliffs of Dunnet Head; and the greater part of the space between, nearly twenty miles as the crow flies, is occupied chiefly by the shales, grits, and flagstones, which we have found charged so abundantly with the strangely-organized ichthyolites of the second stage of vertebrate existence. In the twenty intervening miles there are many breaks and faults, and so there may be, of course, recurrences of the same strata, and re-appearances of the same beds; but, after making large allowance for partial foldings and repetitions, we must regard the development of this formation, with which the twenty miles are occupied, as truly enormous. And yet it is but one of three that occur in a single system. We reach the long flat bay of Dunnet, and cross its waste of sands. The incoherent coils of the sand-worm lie thick on the surface; and here a swarm of buzzing flies, disturbed by the foot, rises in a cloud from some tuft of tangled sea-weed; and here myriads of gray crustaceous sand-hoppers dart sidelong in the little pools, or vault from the drier ridges a few inches into the air. Were the trilobites of the Silurian system, at one period, as their remains testify, more than equally abundant, creatures of similar habits? We have at length arrived at the tall sandstone precipices of Dunnet, with their broad decaying fronts of red and yellow; but in vain may we ply hammer and chisel among them: not a scale, not a plate, not even the stain of an imperfect fucoid appears. We have reached the upper boundary of the Lower Old Red formation, and find it bordered by a desert devoid of all trace of life. Some of

the characteristic types of the formation re-appear in the upper deposits; but though there is a reproduction of the original works in their more characteristic passages, if I may so speak, many of the readings are diverse, and the editions are all new.

It is one of the circumstances of peculiar interest with which Geology at its present stage is invested, that there is no man of energy and observation who may not rationally indulge in the hope of extending its limits by adding to its facts. Mr. Dick, an intelligent tradesman of Thurso, agreeably occupies his hours of leisure, for a few months, in detaching from the rocks in his neighborhood their organic remains; and thus succeeds in adding to the existing knowledge of paleozoic life, by disinterring ichthyolites which even Agassiz himself would delight to figure and describe. Several of the specimens in my possession, which I owe to the kindness of Mr. Dick, are so decidedly unique, that they would be regarded as strangers in the completest geological museums extant. It is a not uncurious fact, that when the Thurso tradesman was pursuing his labors of exploration among rocks beside the Pentland Frith, a man of similar character was pursuing exactly similar labors, with nearly similar results, among rocks of nearly the same era, that bound, on the coast of Cornwall, the British Channel. When the one was hammering in "Ready-money Cove," the other, at the opposite end of the island, was disturbing the echoes of "Pudding-Gno ;" and scales, plates, spines, and occipital fragments of paleozoic fishes rewarded the labors of both. In an article on the scientific meeting at York, which appeared in "Chambers' Journal" in the November of last year, the reading public were introduced to a singularly meritorious naturalist, Mr. Charles Peach,* a

* Mr. Peach has discovered fossils in the Durness limestone, which rests above the quartzite rock of the west of Scotland, that covers the Red

private in the mounted guard (preventive service), stationed on the southern coast of Cornwall, who has made several interesting discoveries on the outer confines of the animal kingdom, that have added considerably to the list of our British zoöphites and echinodermata. The article, a finelytoned one, redolent of that pleasing sympathy which Mr. Robert Chambers has ever evinced with struggling merit, referred chiefly to Mr. Peach's labors as a naturalist; but he is also well known in the geological field.

Sandstone long believed to be OLD RED. The fossils are very obscure.W. S. S.

CHAPTER XII.

Ichthyolite Beds of Clune and Lethenbarn- Limestone Quarry Destruction of Urns and Sarcophagi in the Lime-kiln-Nodules opened - Beautiful coloring of the Remains Patrick Duff's Description-New Genus of Morayshire Ichthyolite described-Form and size of the Nodules or Stone Coffins — Illustration from Mrs. Marshall's Cements-Forest of Darnaway The Hill of Berries - Sluie― Elgin - Outliers of the Weald and the Oolite - Description of the Weald at Linksfield Mr. Duff's Lepidotus minor - Eccentric Types of Fish Scales-Visit to the Sandstones of Scat-Craig — Fine suit of Fossils at Scat-Craig - True graveyard Bones, not mere Impressions - Varieties of pattern - The Diker's "Carved Flowers" Stagonolepis, a new genus-Termination of the Ramble.

My term of furlough was fast drawing to a close. It was now Wednesday the 14th August, and on Monday the 19th it behooved me to be seated at my desk in Edinburgh. I took boat, and crossed the Moray Frith from Cromarty to Nairn, and then walked on, in a very hot sun, over Shakspeare's Moor to Boghole, with the intention of examining the ichthyolite beds of Clune and Lethenbarn, and afterwards striking across the country to Forres, through the forest of Darnaway, where the forest abuts on the Findhorn, at the picturesque village of Sluie. When I had last crossed the moor, exactly ten years before, it was in a tremendous storm of rain and wind; and the dark platform of heath and bog, with its old ruinous castle standing sentry over it, seemed greatly more worthy of the genius of the dramatist, as cloud after cloud dashed over it, like ocean waves breaking on some low volcanic island, than it did on this clear, breathless afternoon, in the unclouded sunshine. But the sublimity of the moor on which Macbeth met the witches depends in no degree on that of the "heath near Forres,"