A careful inspection of the plan will give the reader some ideas of the nature of the functions performed in these establishments, and of the general arrangements adopted in them. The magnitude and extent of them is shown by this fact, that the number of men employed at the Novelty Works is from one thousand to twelve hundred. These are all _men_, in the full vigor of life. If now we add to this number a proper estimate for the families of these men, and for the mechanics and artisans who supply their daily wants, all of whom reside in the streets surrounding the works, we shall find that the establishment represents, at a moderate calculation, a population of _ten thousand souls_. The proper regulation of the labors of so large a body of workmen as are employed in such an establishment, requires, of course, much system in the general arrangements, and very constant and careful supervision on the part of those intrusted with the charge of the various divisions of the work. The establishment forms, in fact, a regularly organized community, having, like any state or kingdom, its gradations of rank, its established usages, its written laws, its police, its finance, its records, its rewards, and its penalties. The operation of the principles of system, and of the requirements of law, leads, in such a community as this, to many very curious and striking results, some of which it would be interesting to describe, if we had space for such descriptions. But we must pass to the more immediate subject in this article, which is the structure of the engine itself, and not that of the community which produces it. The engraving on the next page represents the interior of the engine-room of the Humboldt--a new steamer, which was lying at the dock at the time of our visit, receiving her machinery; though probably before these pages shall come under the eye of the reader, she will be steadily forcing her way over the foaming surges of the broad Atlantic. The machinery, as we saw it, was incomplete, and the parts in disorder--the various masses of which it was ultimately to be composed, resting on temporary supports, in different stages, apparently of their slow journey to the place and the connection in which they respectively belonged. The ingenious artist, however, who made the drawings, succeeded in doing, by means of his imagination, at once, what it will require the workmen several weeks to perform, with all their complicated machinery of derricks, tackles, and cranes. He put every thing in its place, and has given us a view of the whole structure as it will appear when the ship is ready for sea.