children were not all crowded into their rooms all day long, but could play out of doors.
"Depend upon it," said Harry, "it is that gentleman's doing that spoke to me of it the day I came first. This good old kite has done good service, and now it shall be rewarded by sailing up to a splendid height."
As he spoke, he held it up, the light breeze caught it, and it soared away over their heads under the blue sky; while the happy faces that watched it bore witness to the truth of his words – that "the good old kite had done good service."
THE STATE OF THE WORLD BEFORE ADAM'S TIME
Among the millions of human beings that dwell on the earth, how few are those who think of inquiring into its past history. The annals of Greece and Rome are imparted to our children as a necessary and important branch of education, while the history of the world itself is neglected, or at the most is confined to those who are destined for a scientific profession; even adults are content to receive on hearsay a vague idea that the globe was in being for some undefined period preceding the era of human history, but few seek to know in what state it existed, or what appearance it presented.
This is owing, partly, to the hard names and scientific language in which geologists have clothed their science, and partly to ignorance of the beauty and attractive nature of the study; we dread the long, abstruse-sounding titles of Ichthyosaurus and Plesiosaurus, and are repelled by the dry disquisitions on mineralogy into which professors of the science are apt to stray. The truth is, however, that geology properly is divided into two distinct branches; one of these consists of the less attractive, though equally useful, investigation of the chemical constituents of the strata, and the classification of the fossil flora and fauna which belong to the various formations; this, which may be styled geology proper, is the department which belongs almost exclusively to men of science, and, inasmuch as it involves the necessity of acquaintance with the sister sciences of chemistry, mineralogy, zoology, and botany, is least adapted to the understanding of the uninitiated. The other branch, which may be called the history of geology, presents none of these difficulties; it is as easy of comprehension, and as suitable to the popular mind, as any other historical account; while it presents a variety of interest, and a revolution of events, before which the puny annals of modern history sink into insignificance.
Such of our readers as are unacquainted with the science, will probably be inclined to doubt the possibility of our being aware of events which took place ages before Adam was created; here, however, nature herself steps in, and becoming her own historian, writes "in the living rock" the chronicles of past ages, and so accurately and circumstantially, that we can say positively, "Here existed the sea at such a period, and here the tide ebbed and flowed for centuries;" nay, she shows us the footmarks of extinct animals, and tells us the size, nature, habits, and food of creatures which have for unnumbered ages been buried in the grave of time. She informs us that here the ocean was calm, and that there a river flowed into it; here forests grew and flourished, and there volcanoes vomited forth lava, while mighty earthquakes heaved up mountains with convulsive throes. Such are the events that mark the world's history, and we now purpose giving a short sketch of the various eras in its existence.
Hundreds of thousands of years ago, the earth, now so busy and full of life, rolled on its ceaseless course, a vast, desolate, and sterile globe. Day and night succeeded one another, and season followed season, while yet no living form existed, and still the sun rose upon arid, verdureless continents, and hot, caldron-like seas, on which the steaming vapor and heavy fogs sat like an incubus. This is the earliest period of which we glean any positive record, and it is probable that previous to this era the universe was in a state of incandescence, or intense heat, and that by the gradual cooling of the globe, the external surface became hard, and formed a firm crust, in the same manner that molten lead, when exposed to the cold air, hardens on the surface. The vapors which previously floated around this heated mass, in like manner became partially condensed, and gradually accumulating in the hollows, formed the boiling seas which in after ages were destined to be vast receptacles teeming with life.
How long such a period continued it is impossible to say, and were we even able to number its years, we should in all probability obtain a total of such magnitude as would render us unable to form any accurate idea of its extent. Our ideas of time, like those of space, are comparative, and so immense was this single period in geological history, that any interval taken from human records would fail to present an adequate idea of it.
As might be expected, this era was marked by vast and violent convulsions; volcanoes raged and threw up molten granite, earthquakes heaved and uplifted continents, seas were displaced and inundated the land, and still the earth was enveloped in vapor and mist, arising from the high temperature, and the light most probably penetrated only sufficiently to produce a sickly twilight, while the sun shot lurid rays through the dense and foggy atmosphere. Such a world must have been incompatible with either animal or vegetable life, and we accordingly find no remains of either in the rocks which belong to this early period; their principal characteristic is a highly crystalline appearance, giving strong presumptive evidence of the presence of great heat.
After this era of desolation and gloom, we enter upon what is technically termed the "Transition period," and here we begin to mark the gradual preparation of the globe for the reception of its destined inhabitants. The change is, however, at first very slight, and there is evidence of frequent convulsions and of a high degree of temperature; but the action of fire appears to have declined in force, and aqueous agencies are exerting themselves. The earlier portion of this formation is rendered peculiarly interesting by the fact, that during it the most ancient forms of life sprang into existence. It is true that merely a few species of shell-fish, with some corals, inhabited the depths of the ocean, while the dry land still remained untenanted; nevertheless, humble and scanty as they were, we can not fail to look with interest on the earliest types of that existence, which has subsequently reached such perfection in ourselves.
The presence of corals shows, that although the transition seas had lost their high temperature, yet they retained a sufficient degree of heat to encourage the development of animals requiring warmth. These minute animals possess the remarkable property of extracting from the elementary bodies held in solution in the waters, the materials for forming new rocks. To the coral animalcule or polype we owe much of the vast limestone beds which are found in every part of the world, and many a vessel laden with the riches and productions of the earth finds a grave on the sunken reefs that are the fruit of its labors.
As ages elapsed, and the universe became better adapted for the reception of life, the waters swarmed with zoophytes and corals, and in the silurian strata we find organic remains abundant; shell-fish are numerous and distinct in form, and in some instances display a very interesting anatomical construction. As an instance we may mention the Trilobite, an animal of the crustacean order; the front part of its body formed a large crescent-shaped shield, while the hinder portion consisted of a broad triangular tail, composed of segments folding over each other like the tail of a lobster; its most peculiar organ, however, was the eye, which was composed of four hundred minute spherical lenses placed in separate compartments, and so situated, that in the animal's usual place at the bottom of the ocean it could see every thing around. This kind of eye is also common to the existing butterfly and dragon-fly, the former of which has 35,000, and the latter 14,000 lenses.
Continuing to trace the history of this ancient period, we reach what is called among geologists the Old Red Sandstone age. The corals, and the shell-fish, and the crustacea of the former period have passed away, and in their place we find fishes; thus presenting to us the earliest trace of the highest order of the animal kingdom – vertebrata. The plants in this system are few, and it would seem as if the condition of the world was ill-adapted for their growth. Another peculiar characteristic of this era is the state of calm repose in which the ocean appears to have remained; in many rocks the ripple mark left by the tide on the shores of the ancient seas is clearly visible; nevertheless considerable volcanic action must have taken place, if we are to believe geologists,
