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form to the modern porpoise; it had four broad feet, and a long and powerful tail; its jaws were so prodigious that it could probably expand them to a width of five or six feet, and its powers of destruction must have been enormous. The length of some of these reptiles exceeded thirty feet.

      Another animal which lived at this period was the Plesiosaurus. It lived in shallow seas and estuaries, and would seem, from its organs of respiration, to have required frequent supplies of fresh air. Mr. Conybeare describes it as "swimming upon, or near the surface, arching its long neck like the swan, and occasionally darting it down at the fish which happened to float within its reach."

      This reptile, which was smaller than the Ichthyosaurus, has been found as long as from twelve to fifteen feet. Its appearance and habits differed from the latter materially. The Ichthyosaurus, with its short neck, powerful jaws, and lizard-like body, seems admirably suited to range through the deep waters, unrivaled in size or strength, and monarch of the then existing world; the Plesiosaurus, smaller in size and inferior in strength, shunned its powerful antagonist, and, lurking in shallows and sheltered bays, remained secure from the assaults of its dangerous foe, its long neck and small head being well adapted to enable it to dart on its prey, as it lay concealed amid the tangled sea-weed.

      This has been called by geologists the "age of reptiles;" their remains are found in great numbers in the lias, oolite, and wealden strata. These creatures seem to form a connecting link between the fishes of the previous era, and the mammalia of the Tertiary age; the Ichthyosaurus differed little from a fish in shape, and its paddles or feet are not unlike fins, the Plesiosaurus, on the contrary, as its name denotes, partook more of the quadruped form. Dr. Buckland in describing it, says: "To the head of a lizard it united the teeth of a crocodile; a neck of enormous length, resembling the body of a serpent; a trunk and tail having the proportions of an ordinary quadruped; the ribs of a cameleon, and the paddles of a whale." Besides these animals we find the Pterodactyle, half bird and half reptile; the Megalosaurus, or gigantic lizard; the Hylæosaurus, or forest lizard; the Geosaurus, or land lizard, and many others, all partaking more or less of affinity to both the piscatory and saurian tribes.

      Passing on now to the period when the great chalk rocks which prevail so much in the southeastern counties of Great Britain were deposited, we find the land in many places submerged; the fossil remains are eminently marine in character, and the earth must literally have presented a "world of waters" to the view. Sponges, corals, star-fish, and marine reptiles inhabited the globe, and plants, chiefly of marine types, grew on its surface. Although, however, a great portion of the earth was under water, it must not therefore be supposed that it was returning to its ancient desolation and solitude. The author whom we last quoted, in speaking of this subject, says: "The sterility and solitude which have sometimes been attributed to the depths of the ocean, exist only in the fictions of poetic fancy. The great mass of water that covers nearly three-fourths of the globe is crowded with life, perhaps more abundantly than the air and the surface of the earth; and the bottom of the sea, within a certain depth accessible to light, swarms with countless hosts of worms and creeping things, which represent the kindred families of low degree which crawl upon the land."

      This era seems to have been one of peculiar tranquillity, for the most part undisturbed by earthquakes or other igneous forces. The prevailing characteristic of the scenery was flatness, and low continents were surrounded by shallow seas. The earth is now approaching the state when it will be fit for the reception of man, and in the next age we find some of the existing species of animals.

      It is worthy of observation, that at the different periods when the world had attained a state suitable for their existence, the various orders of animal and vegetable life were created. In the "dark ages" of geological history, when the globe had comparatively lately subsided from a state of fusion,19 it was barren, sterile, and uninhabited; next, the waters having become cool enough, some of the lowest orders of shell-fish and zoophytes peopled them; subsequently, fishes were formed, and for ages constituted the highest order of animal life; after this we enter on the age of reptiles, when gigantic crocodiles and lizard-like forms dwelt in fenny marshes, or reposed on the black mud of slow moving rivers, as they crept along toward the ocean betwixt their oozy banks; and we now reach the period when the noblest order of animal life, the class to which man himself belongs, Mammalia, began to people the earth.

      The world now probably presented an appearance nearly similar to what it does at present. The land, which in the chalk formation was under water, has again emerged, and swarms with life; vast savannahs rich in verdure, and decked in a luxuriant garb with trees, plants, grasses, and shrubs, and inland lakes, to which the elephant, the rhinoceros, and the hippopotamus, with many extinct races of animals, came to slake their thirst, form the principal characteristics of this period.

      There is something peculiarly interesting in looking back to this early age, while Adam was yet dust. We picture to the mind's eye the gigantic Deinotherium, the largest creature of terrestrial life, raking and grabbing with its huge tusks the aquatic plants that grew in the pools and shallow lakes, or, as Dr. Buckland describes it, sleeping with its head hooked on to the bank, and its nostrils sustained above water so as merely to breathe, while the body remained floating at ease beneath the surface. We see its twin-brother in greatness, the Megatherium, as it comes slowly stalking through the thick underwood, its foot, of a yard in length, crushing where it treads, and its impenetrable hide defying the attacks of rhinoceros or crocodile. In the waters we behold the mighty whale, monarch of the deep, sporting in the pre-adamite seas as he now does amid the icebergs of the Arctic ocean; the walrus and the seal, now denizens of the colder climes, mingling with the tropical manati; while in the forests the owl, the buzzard, and the woodcock, dwelt undisturbed, and the squirrel and monkey leaped from bough to bough.

      Arrived at the close of the pre-adamite history, after having traced it from the earliest ages of which we possess any evidence, down to the eve of human existence, the reflection that naturally presents itself to the mind is the strangeness of the fact, that myriads of creatures should have existed, and that generation after generation should have lived and died and passed away, ere yet man saw the light. We are so accustomed to view all creatures as created solely for human use, rather than for the pleasure of the Divine Creator, that we can at first scarcely credit the history, though written by the hand of nature herself; and the human race sinks into insignificance when it is shown to be but the last link in a long chain of creations. Nevertheless, that such, however humbling it may be, is the fact, we possess indubitable evidence: and when we consider, as Mr. Bakewell observes, "that more than three-fifths of the earth's present surface are covered by the ocean, and that if from the remainder we deduct the space occupied by polar ice and eternal snows, by sandy deserts, sterile mountains, marshes, rivers, and lakes, that the habitable portion will scarcely exceed one-fifth of the whole globe; that the remaining four-fifths, though untenanted by mankind, are, for the most part, abundantly stocked with animated beings, that exult in the pleasure of existence, independent of human control, and in no way subservient to the necessities or caprices of men; that such is and has been, for several thousand years, the actual condition of our planet; we may feel less reluctance in admitting the prolonged ages of creation, and the numerous tribes that lived and flourished, and left their remains imbedded in the strata which compose the outer crust of the earth."

      THE MANIA FOR TULIPS IN HOLLAND

      The inordinate passion, which at one time prevailed for Tulips, amounted to actual madness, and well deserved the name of Tulipomania, by which it is distinguished. The Tulip was introduced into Europe from Constantinople in the year 1559, according to Gesner. After it became known to the Dutch merchants and nobility at Vienna, it became a most important branch of trade in Holland, and they sent frequently to Constantinople for roots and seeds of the flower. In the year 1634, and for three years after, little else was thought of in Holland but this traffic; all embarked in it, from the nobleman to the common laborer, and so successful were many that they rose rapidly from abject poverty to affluence; and those who had been barely able to procure the most scanty means of subsistence were enabled to set up their carriages, and enjoy every convenience and luxury of life; indeed, when we read of the enormous sums paid for a single root, we can feel no surprise at the immense and rapid fortunes which were made. It is on record, that one wealthy merchant gave his daughter no other portion to secure an

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