In the construction of the building the utmost care was taken to give each part the stiffest and strongest form possible in a given quantity of material. The columns were hollow; and the girders which united them were trellis-formed. The utmost weight which it was supposed any girder would be likely to have upon it, was seven and a half tuns; and not one was used till after having been tested to the extent of fifteen tuns; while the breaking weight was calculated at thirty tuns. At first sight it would seem as if there might be danger that a building presenting so vast a surface to the action of the wind, might be liable to be blown down, or at least forced out of position. But from the manner in which the columns were framed together, they could not be overthrown except by breaking them; and experiments showed, that in order to break the one thousand and sixty columns on the ground floor, a force of sixty-three hundred and sixty tuns must be exerted, at a hight of twenty-four feet. But the greatest force of the wind known, is computed at twenty-two pounds to the superficial foot; so that assuming even a force of twenty-eight pounds, and supposing a hurricane with that momentum to strike at once the whole side of the building, the total force, it was said, would be less than fifteen hundred tuns, not one-fourth what the building could easily sustain, independently of the bracings, which added materially to its strength. So that, if any reliance at all could be placed on theoretical engineering, there could, it was said, be no doubt whatever but that the building would be safe in the most violent tempest.

The building being thus erected, the spectator entering at the main east or west entrance, found himself in a nave sixty-four feet in hight, and seventy-two in breadth, and extending without interruption the whole length of the building, one-third of a mile. Parallel with this, but interrupted by the transept in the center, was a series of side aisles, of forty-eight and twenty-four feet in breadth, and with a hight of forty-four and twenty-four feet. And over the center of the nave, swelled the semicircular roof of the transept, overarching the stately trees beneath; thus forming a gigantic green-house, with the ancient elms of the park in the place of geraniums and rose-bushes. The whole area of the ground-floor was seven hundred and seventy-two thousand, seven hundred and eighty-four square feet, and that of the galleries, two hundred and seventeen thousand; making in all nearly a million square feet, to which should be added five hundred thousand feet of hanging space, available for the display of the innumerable products of human skill and labor, that made the exhibition one of the most wondrous of all the wonders of the world.

There were three refreshment rooms; one in the transept, and one near each end of the building, around the huge trees of the park, which, as already said, were left standing. No wine, spirits or fermented liquors were allowed to be sold, but only tea, coffee and unfermented drinks; while pure water was to be furnished gratis to all, by the lessees of the refreshment rooms. As to the decoration of the interior, it may here be added, that the shafts of all the columns were painted yellow; the concave portions of the capitals, blue; the under sides of the girders, red; and their vertical surfaces, white.

We might dwell in detail on the vast collection of the products of human industry and art which filled the interior of this immense structure, and made it the resort of visitors from every part of the world. But the history of “the great exhibition” is familiar to most if not all of our readers. We will only add, that among all the wonders of the crystal palace, nothing was more wonderful than its cheapness, and the rapidity of its construction. Possession of the site was obtained on the thirtieth of July; and in a period of one hundred and forty-five working days, the building was mainly completed. Its cost was less, by the cubic foot, than an ordinary barn. If it had been used only for the exhibition, and at its close returned to the contractors, its cost would have been nine-sixteenths of a penny per foot; and if it had been left remaining permanently, it would have been but one penny and one-twelfth of a penny per foot. The astonishing fact, that a building of glass and iron, including thirty-three million cubic feet, and covering eighteen acres, and affording room for nine miles of tables, should have been completed in less than five months from the day when the contract was entered into, at a cost less than that of the humblest hovel, opens a new era in the art of building.

Silliman, in his late “Visit to Europe,” under the date of the twenty-ninth of March, 1851, says: “Into this wonderful and imposing structure we have to-day merely made our entrance. As we drove along the eastern side of Hyde park, on a bright and beautiful morning, the splendid vision caught our eyes, as the sunlight was thrown wide around by this immense mirror. It was merely a glance that we took on this occasion, reserving more deliberate observation for future opportunities. It was not accessible, as yet, to visitors, but by particular favor, through an introduction to one of the managers, we were admitted into the interior. It has become so familiar, in all its aspects, to the whole world, that at this date, after its complete development, any detailed description would be out of place. The general impression made upon us, by our walks through this stupendous conservatory of the arts, was that of great splendor and magnificence. It appeared a fairy palace, like the creations of fable; a building equally unique and original in its structure; original, also, in its bearing upon the concord and amicable rivalry of nations; in this respect of most auspicious tendency. Already the consignments of the world are coming in, and to a great extent have actually arrived. African Tunis sends its contributions, and even more remote countries are beginning to occupy the large space allotted to them. The palace is so high as to cover several of the large trees of Hyde park, where it is erected; and we saw, not without a shudder, a man dangling in the air at the end of a rope near the roof, at the hight of eighty feet. He had been drawn up simply by holding on the end of the rope by his hands, and was whirled around and around, until he reached a plank almost in the angle of the roof, where at last he was safely landed.”

And at a later date, he adds: “Although I have walked many hours, and I presume ten miles in this immense structure, I seem only to have begun to see it. In despair of my ability to convey any adequate idea of it, I am almost disposed to pass it in silence, but this would disappoint those for whom I write. Pictures and descriptions of the building had reached America before I left home, and it is known that its front extends more than one-third of a mile, besides its branches. The area which it covers is eighteen acres, and under its vaulted transept are included some large and lofty trees that were growing in the park. So many accounts of its contents, and so many views of its form, both within and without, have been since published, that a better idea of both can be obtained from numerous sources, than from anything that I can write. I shall, therefore, attempt nothing more than some general remarks, and will mention a few examples. When we were here in March, I expressed my admiration of the general design. So far as I know it is novel. Exhibitions of the productions, whether in nature or art, of particular countries, have often been made, and in some countries they are annual, as in France, England, and in the United States; but I believe it was reserved for Prince Albert to originate the design of inviting all nations to bring to one place the results of their industry and skill, and specimens of their physical resources. For obvious reasons, no place was so proper as London, the commercial metropolis of the world, and I suppose now containing a greater population, and certainly more wealth, and exerting more influence on mankind, than any other city. The invitation was a pledge of universal good-will, and it has evidently tended to produce kind feelings among the nations. Instead of new fortresses of stone and iron, instead of walls and battlements to protect this immense city from invasion, there rises in its grand domain of Hyde park, a crystal palace, the temple of arts and industry. It rose like an exhalation, a magical illusion of the senses. The frame-work of iron, although strong enough to sustain the weight and to resist the winds, is so little apparent to the eye, that the crystal palace appears a sea of glass, as in the Revelations, ‘A sea of glass like unto crystal.’ One might dream, as in the ‘Arabian Nights,’ of such a creation, ‘in the visions of the night, when deep sleep falleth upon men,’ and might find on waking that it was all an illusion, when it would vanish like the fabric of a dream, and leave not a wreck behind. But there it stands, a splendid reality, and with its widely extended transepts, wings and galleries, has proved sufficient to receive and protect the gathered riches of mankind.

“I mentioned in my passage from Boulogne, that I was in company with a large number of French people coming over to see the crystal palace. Crowds of all nations throng this palace; fifty thousand, or sixty thousand, and sometimes seventy thousand in a day. As you walk about, or thread your way through the great masses of human beings that crowd the avenues, you may hear half the languages of Europe, and some of those of the orient. I imagined that before our return from the continent the deluge of nations would have subsided, and this consideration was not without weight in inducing us to prefer a late inspection of the splendid wonder; but in this particular we have been disappointed. The numbers who daily resort to the crystal palace are undiminished: it may be that there are fewer foreigners, but since the price has been reduced to a shilling, the country people come in, parents and children, and mothers with their infants; steamboats and cars are crowded, and it seems as if the rural population of the kingdom were all rushing into London.

“As to the contents of the palace, it is impossible to enumerate them. A mere catalogue, with the most brief descriptive notices, would fill a large volume. I can only mention groups of things, with here and there a particular instance. The collection embraces the useful as well as the fine arts. All kinds of agricultural machines are here to be seen, and there are seeds, and specimens of crops, all duly arranged and labeled. The American department has been somewhat undervalued, because it was not so splendid, and was less full than the collections from some other countries, but even the Times, which has generally an unfriendly bearing in relation to our country, has commended the American department on the score of utility. Indeed, it was not reasonable to expect that a country occupied but two centuries by civilized people, should be able fully to compete with nations who have been civilized for a thousand years; and our great distance, and the difficulty and expense of transporting articles across the ocean, and of coming over to look after them, must have prevented our appearing as we do at home, in the great industrial exhibitions of New York, Philadelphia and Boston. I have seen such gatherings at Niblo’s and the Castle Garden, in New York, and in Boston, not only of useful, but of elegant things, as I should feel proud to see in the American department in the crystal palace. Two agricultural instruments are, however, spoken of as giving the palm to America above all competition. I refer to the plow and the reaping-machine of American manufacture. The plow is said to have attained the perfection of form, and the reaping-machine to be recommended by its great utility.

“Iron, as it is the material which, more than others, (wood excepted,) contributes indispensable aid to the arts of life, occupies a conspicuous place in the exhibition. Its ores and its castings, and its wrought articles, whether in a locomotive, or the hair-spring of a chronometer, whether in chain-cables or a cambric needle, are displayed in endless variety of useful and beautiful forms, and in this department England justly claims and fully proves her preëminence. Iron, lead, copper, bismuth, zinc, antimony, and silver, gold and platinum, are conspicuous here. England glories in her tin, lead and copper: in the two latter we can compete with her; our lead is inexhaustible, and our native copper of Lake Superior, is unequaled for abundance. A large mass of it has been brought over for the exhibition, weighing many thousand pounds.

“Nothing can exceed the beauty of the articles of silver, whether utensils or ornaments, which are exposed to view in the gallery of the crystal palace. The most graceful forms both of peaceful men, and of warriors, armed cap-à-pie; and of woman in the very beau ideal of her loveliness, are here in profusion; and if England excels in these articles in silver, France is not behind her, both in them and in gilded furniture, and bronze, as seen in all the splendor and elegance of the show windows of the Palais Royal. The silver extracted from lead by Pattinson’s process is here seen in piles so rich, with a perfect purity of whiteness, and in scaly pyramids, a kind of flaky mound, that the observer looks on with delight, as also upon the same metal cast in ponderous ingots. Here is the gold of California, one brilliant mass weighing in value eight hundred pounds sterling, equivalent to nearly four thousand dollars. There are three masses of native Siberian, or Russian platinum, weighing respectively twenty-one, twenty-three, and twenty-five pounds, and many wrought articles of the same metal. The copper of Russia, in the form of malachite, here makes a great figure. The same material which we saw in the Vatican, and in the palace of the king of Prussia, in the form of magnificent vases, is here seen wrought into innumerable forms of beauty. There is even a large paneled door fabricated entirely of malachite. Of course many pieces are united to afford the requisite mass. There are tables, vases, urns, chairs, settees, &c., mounted with the same rich material. The gems form a conspicuous ornament of the collection. Queen Victoria has loaned her largest diamond, with several smaller ones, to be exhibited, and here also are some of the most precious of the diamonds, rubies, sapphires, topazes, emeralds, chrysoberyls, opals, and pearls of the regalia of Russia, Spain and India. The Duke of Devonshire has an emerald deposited by Mr. Tenant, nearly two inches in the diagonal diameter, and two to three inches in length; it is of surpassing beauty, being perfectly crystallized, and of the most intense and uniform grass-green color. There is no end to the bijouterie of the French. A case in the gallery is composed of four pieces of plate glass, each between five and six feet long, and four to five broad. This case is entirely filled with elegant ornamental articles.