no better illustration than the history of inventions and discoveries. If there were among us an intellect sufficiently encyclopedic in knowledge and versatile in genius, it could take every one of these facts and trace its intricate lineage of principles and mechanisms, step by step, up to the original Adam of the first invention and the original Eve of the first necessity.

There is a period between us and these first parents of our present progress that is strangely obscure. It is a sort of antediluvian age, in which there were evidently stupendous mechanical powers of some kind, and an extensive acquaintance with some things. The ruins of Egypt alone would prove this. But a deluge of oblivion has washed over them, and left these colossal bones to tell what story they can. The only way to account for such an extinction is, that they were monstrous contrivances out of all proportion to their age, spasmodic successes in science, wonders born out of due time,—deriving no sustenance or support from a wide and various kindred, and therefore, like the giants which were of old, dying out with their day.

It is different with what has taken place since. Every work has come in its right time, just when best prepared for, and most required. There is not one but is sustained on every side, and fits into its place, as each new piece of colored stone in a mosaic is sustained by the progressive picture. Every one is conserved by its connections. Whatever has been done is sure,—and the past being secure, the future is guarantied. It is impossible that the present knowledge in the world should be extinguished. Nothing but a stroke of imbecility upon the race, nothing but the destruction of its libraries, nothing but the paralysis of the printing-press, and the annihilation of these means of intercommunication,—nothing but some such arbitrary intervention could accomplish it. The facts already in human possession, and the constitution of the mind, together insure what we have as imperishable, and what we are to obtain as illimitable.

We come now to another suggestive characteristic of the time,—another of its promises. So far we find Progress gathering fulness and strength,—making sure of itself. It has also been gathering impetus. It has been, all along, accumulating momentum, and now it sweeps on with breathless rapidity. The reason is, that, the farther it has gone, the more it has multiplied its agents. The present generation is not only carried forward, but is excited in every quarter. The activity and versatility of the intellect would appear to be inexhaustible. Instead of getting overstrained, or becoming lethargic, it never was so powerful, never had so many resources, never was so wide-awake. Men are busy turning over every stone in their way, in the hope of finding something new. Nothing would seem too small for human attention, nothing too great for human undertaking. The government Patent-Office, with its countless chambers, is not so large a museum of inventions as the capacious brain of to-day.

One man is engrossed over an apple-parer; another snatches the needle from the weary fingers of the seamstress, and offers her in return the sewing-machine. That man yonder has turned himself into an armory, and he brings out the deadliest instrument he can produce, something perhaps that can shoot you at sight, even though you be a speck in the horizon. His next-door neighbor is an iron workshop, and is forging an armor of proof for a vessel of war, from which the mightiest balls shall bound as lightly as the arrows from an old-time breastplate. There is another searching for that new motive power which shall keep pace with the telegraph, and hurl the bodies of men through space as fast as their thoughts are hurled; there is another seeking that electro-magnetic battery which shall speak instantly and distinctly to the ends of the earth. The mind of that astronomer is a telescope, through whose increasing field new worlds float daily by; the mind of that geologist is a divining-rod, forever bending toward the waters of chaos, and pointing out new places where a shaft can be sunk into periods of almost infinite antiquity; the mind of that chemist is a subtile crucible, in which aboriginal secrets lie disclosed, and within whose depths the true philosopher's stone will be found; the mind of that mathematician is a maze of ethereal stair-ways, rising higher and higher toward the heaven of truth.

The ambition is everywhere,—in every breast; the power is everywhere,—in every brain. The giant and the pigmy are alike active in seeking out and finding out many inventions. And in this very universality of effort and result we discover another guaranty of the great future. The river of Progress multiplies its tributaries the farther it flows, and even now, unknown ages from its mouth, we already see that magnificent widening of its channel, in which, like the Amazon, it long anticipates the sea.

Man, the great achiever! the marvellous magician! Look at him! A head hardly six feet above the ground out of which he was taken. His "dome of thought and palace of the soul" scarce twenty-two inches in circumference; and within it, a little, gray, oval mass of "convoluted albumen and fibre, of some four pounds' weight," and there sits the intelligence which has worked all these wonders! An intelligence, say, six thousand years old next century. How many thousand years more will it think, and think, and wave the wand, and raise new spirits out of Nature, open her sealed-up mysteries, scale the stars, and uncover a universe at home? How long will it be before this inherent power, laid in it at the beginning by the Almighty, shall be exhausted, and reach its limit? Yes, how long? We cannot begin to know. We cannot imagine where the stopping-place could be. Perhaps there is none.

To take up the nautical figure which has furnished our title,—we are in the midst of an infinite sea, sailing on to a destination we know not of, but of which the vague and splendid fancies we have formed hang before our prow like illusions in the sky. We are meeting on every hand great opportunities which must not be lost, new achievements which must be wrought, and strange adventures which must be undertaken: every day wondering more to what our commission shall bring us at last, full of magnificent hopes and a growing faith,—the inscrutable bundle of orders not nearly exhausted: whole continents of knowledge yet to be discovered and explored; the gates of yet distant sciences to be sought and unlocked; the fortresses of yet undreamed necessities to be taken; Arcadias of beauty to be visited and their treasures garnered by the imagination; an intricate course to be followed amid all future nations and governments, and their winding histories, as if threading the devious channels of endless archipelagoes; the spoils of all ages to be gathered, and treaties of commerce with all generations to be made, before the mysterious voyage is done.

And now, before we leave this fascinating theme, or suffer another dream, let us stop where we are, in order to see where we are. Let us take our bearings. What says our chart? What do we find in the horizon of the present, which may give us the wherewithal to hope, to doubt, or to fear?

The era in which we live presents some remarkable characteristics, which have been brought into it by this immense material success. It is preeminently an age of reality: an age in which a host of unrealities—queer and strange old notions—have been destroyed forever. Never were the vaulted spaces in this grand old temple of a world swept so clean of cobwebs before. The mind has not gone forth working outside wonders, without effecting equal inside changes. In achieving abroad, it has been ennobling at home. At no time was it so free from superstition as now, and from the absurdities which have for centuries beset and filled it. What numberless delusions,