And of full various forms, which still increase

In height and bulk by a continual drop.

Which upon each distilling from the top,

And falling still exactly on the crown.

There break themselves to mists, which, trickling down.

Crust into stone, and (but with leisure) swell

The sides, and still advance the miracle."—Charles Cotton.

It is low water in the Firth of Cromarty during stream tides, between six and seven o'clock in the evening; and my uncle Sandy, in returning from his work at the close of the day, used not unfrequently, when, according to the phrase of the place, "there was a tide in the water," to strike down the hillside, and spend a quiet hour in the ebb. I delighted to accompany him on these occasions. There are professors of Natural History that know less of living nature than was known by Uncle Sandy; and I deemed it no small matter to have all the various productions of the sea with which he was acquainted pointed out to me in these walks, and to be in possession of his many curious anecdotes regarding them.

He was a skilful crab and lobster fisher, and knew every hole and cranny, along several miles of rocky shore, in which the creatures were accustomed to shelter, with not a few of their own peculiarities of character. Contrary to the view taken by some of our naturalists, such as Agassiz, who hold that the crab—a genus comparatively recent in its appearance in creation—is less embryotic in its character, and higher in its standing, than the more ancient lobster, my uncle regarded the lobster as a more highly developed and more intelligent animal than the crab. The hole in which the lobster lodges has almost always two openings, he has said, through one of which it sometimes contrives to escape when the other is stormed by the fisher; whereas the crab is usually content, like the "rat devoid of soul," with a hole of only one opening; and, besides, gets so angry in most cases with his assailant, as to become more bent on assault than escape, and so loses himself through sheer loss of temper. And yet the crab has, he used to add, some points of intelligence about him too. When, as sometimes happened, he got hold, in his dark narrow recess in the rock, of some luckless digit, my uncle showed me how that, after the first tremendous squeeze, he began always to experiment upon what he had got, by alternately slackening and straitening his grasp, as if to ascertain whether it had life in it, or was merely a piece of dead matter; and that the only way to escape him, on these trying occasions, was to let the finger lie passively between his nippers, as if it were a bit of stick or tangle; when, apparently deeming it such, he would be sure to let it go; whereas, on the least attempt to withdraw it, he would at once straiten his gripe, and not again relax it for mayhap half an hour. In dealing with the lobster, on the other hand, the fisher had to beware that he did not depend too much on the hold he had got of the creature, if it was merely a hold of one of the great claws. For a moment it would remain passive in his grasp; he would then be sensible of a slight tremor in the captured limb, and mayhap hear a slight crackle; and, presto, the captive would straightway be off like a dart through the deep-water hole, and only the limb remain in the fisher's hand. My uncle has, however, told me that lobsters do not always lose their limbs with the necessary judgment. They throw them off when suddenly frightened, without first waiting to consider whether the sacrifice of a pair of legs is the best mode of obviating the danger. On firing a musket immediately over a lobster just captured, he has seen it throw off both its great claws in the sudden extremity of its terror, just as a panic-struck soldier sometimes throws away his weapons. Such, in kind, were the anecdotes of Uncle Sandy. He instructed me, too, how to find, amid thickets of laminaria and fuci, the nest of the lump-fish, and taught me to look well in its immediate neighbourhood for the male and female fish, especially for the male; and showed me further, that the hard-shelled spawn of this creature may, when well washed, be eaten raw, and forms at least as palatable a viand in that state as the imported caviare of Russia and the Caspian. There were instances in which the common crow acted as a sort of jackal to us in our lump-fish explorations. We would see him busied at the side of some fuci-covered pool, screaming and cawing as if engaged in combating an enemy; and, on going up to the place, we used to find the lump-fish he had killed fresh and entire, but divested of the eyes, which we found, as a matter of course, that the assailant, in order to make sure of victory, had taken the precaution of picking out at an early stage of the contest.

Nor was it with merely the edible that we busied ourselves on these journeys. The brilliant metallic plumage of the sea mouse (Aphrodita), steeped as in the dyes of the rainbow, excited our admiration time after time; and still higher wonder used to be awakened by a much rarer annelid, brown, and slender as a piece of rope-yarn, and from thirty to forty feet in length, which no one save my uncle had ever found along the Cromarty shores, and which, when broken in two, as sometimes happened in the measuring, divided its vitality so equally between the pieces, that each was fitted, we could not doubt, though unable to repeat in the case the experiment of Spallanzani, to set up as an independent existence, and carry on business for itself. The annelids, too, that form for themselves tubular dwellings built up of large grains of sand (amphitrites), always excited our interest. Two hand-shaped tufts of golden-hued setæ—furnished, however, with greatly more than the typical number of fingers—rise from the shoulders of these creatures, and must, I suspect, be used as hands in the process of building; at least the hands of the most practised builder could not set stones with nicer skill than is exhibited by these worms in the setting of the grains which compose their cylindrical dwellings—dwellings that, from their form and structure, seem suited to remind the antiquary of the round towers of Ireland, and, from the style of their masonry, of old Cyclopean walls. Even the mason-wasps and bees are greatly inferior workmen to these mason amphitrites. I was introduced also, in our ebb excursions, to the cuttle-fish and the sea-hare, and shown how the one, when pursued by an enemy, discharges a cloud of ink to conceal its retreat, and that the other darkens the water around it with a lovely purple pigment, which my uncle was pretty sure would make a rich dye, like that extracted of old by the Tyrians from a whelk which he had often seen on the beach near Alexandria. I learned, too, to cultivate an acquaintance with some two or three species of doris, that carry their arboraceous, tree-like lungs on their backs, as Macduff's soldiers carried the boughs of Birnam wood to the Hill of Dunsinane; and I soon acquired a sort of affection for certain shells, which bore, as I supposed, a more exotic aspect than their neighbours. Among these were, Trochus Zizyphinus, with its flame-like markings of crimson, on a ground of paley-brown; Patella pellucida, with its lustrous rays of vivid blue on its dark epidermis, that resemble the sparks of a firework breaking against a cloud; and, above all, Cypræa Europea, a not rare shell further to the north, but so little abundant in the Firth of Cromarty, as to render the live animal, when once or twice in a season I used to find it creeping on the laminaria at the extreme outer edge of the tide-line, with its wide orange mantle flowing liberally around it, somewhat of a prize. In short, the tract of sea-bottom laid dry by the ebb formed an admirable school, and Uncle Sandy an excellent teacher, under whom I was not in the least disposed to trifle; and when, long after, I learned to detect old-marine bottoms far out of sight of the sea—now amid the ancient forest-covered Silurians of central England, and anon opening to the light on some hillside among the Mountain Limestones of our own country—I have felt how very much I owed to his instructions.