Essays, Henry David Thoreau [ebook reader with android os txt] 📗

worn out, or, in other words, into perpetual motions”⁠ ⁠… “Hitherto the power of the wind has been applied immediately upon the machinery for use, and we have had to wait the chances of the wind’s blowing; while the operation was stopped as soon as the wind ceased to blow. But the manner, which I shall state hereafter, of applying this power, is to make it operate only for collecting or storing up power, and then to take out of this store, at any time, as much as may be wanted for final operation upon the machines. The power stored up is to react as required, and may do so long after the original power of the wind has ceased. And though the wind should cease for intervals of many months, we may have by the same power a uniform perpetual motion in a very simple way.”

“The weight of a clock being wound up gives us an image of reaction. The sinking of this weight is the reaction of winding it up. It is not necessary to wait till it has run down before we wind up the weight, but it may be wound up at any time, partly or totally; and if done always before the weight reaches the bottom, the clock will be going perpetually. In a similar, though not in the same way, we may cause a reaction on a larger scale. We may raise, for instance, water by the immediate application of wind or steam to a pond upon some eminence, out of which, through an outlet, it may fall upon some wheel or other contrivance for setting machinery a going. Thus we may store up water in some eminent pond, and take out of this store, at any time, as much water through the outlet as we want to employ, by which means the original power may react for many days after it has ceased.⁠ ⁠… Such reservoirs of moderate elevation or size need not be made artificially, but will be found made by nature very frequently, requiring but little aid for their completion. They require no regularity of form. Any valley, with lower grounds in its vicinity, would answer the purpose. Small crevices may be filled up. Such places may be eligible for the beginning of enterprises of this kind.”

The greater the height, of course, the less water required. But suppose a level and dry country; then hill and valley, and “eminent pond,” are to be constructed by main force; or, if the springs are unusually low, then dirt and stones may be used, and the disadvantage arising from friction will be counterbalanced by their greater gravity. Nor shall a single rood of dry land be sunk in such artificial ponds as may be wanted, but their surfaces “may be covered with rafts decked with fertile earth, and all kinds of vegetables which may grow there as well as anywhere else.”

And, finally, by the use of thick envelopes retaining the heat, and other contrivances, “the power of steam caused by sunshine may react at will, and thus be rendered perpetual, no matter how often or how long the sunshine may be interrupted. (Etzler’s Mechanical System).”

Here is power enough, one would think, to accomplish somewhat. These are the powers below. Oh ye millwrights, ye engineers, ye operatives and speculators of every class, never again complain of a want of power; it is the grossest form of infidelity. The question is not how we shall execute, but what. Let us not use in a niggardly manner what is thus generously offered.

Consider what revolutions are to be effected in agriculture. First, in the new country a machine is to move along, taking out trees and stones to any required depth, and piling them up in convenient heaps; then the same machine, “with a little alteration,” is to plane the ground perfectly, till there shall be no hills nor valleys, making the requisite canals, ditches, and roads as it goes along. The same machine, “with some other little alterations,” is then to sift the ground thoroughly, supply fertile soil from other places if wanted, and plant it; and finally the same machine, “with a little addition,” is to reap and gather in the crop, thresh and grind it, or press it to oil, or prepare it any way for final use. For the description of these machines we are referred to “Etzler’s Mechanical System, pages 11 to 27.” We should be pleased to see that “Mechanical System,” though we have not been able to ascertain whether it has been published, or only exists as yet in the design of the author. We have great faith in it. But we cannot stop for applications now.

“Any wilderness, even the most hideous and sterile, may be converted into the most fertile and delightful gardens. The most dismal swamps may be cleared of all their spontaneous growth, filled up and levelled, and intersected by canals, ditches and aqueducts, for draining them entirely. The soil, if required, may be meliorated, by covering or mixing it with rich soil taken from distant places, and the same be mouldered to fine dust, levelled, sifted from all roots, weeds and stones, and sowed and planted in the most beautiful order and symmetry, with fruit trees and vegetables of every kind that may stand the climate.”

New facilities for transportation and locomotion are to be adopted:

“Large and commodious vehicles, for carrying many thousand tons, running over peculiarly adapted level roads, at the rate of forty miles per hour, or one thousand miles per day, may transport men and things, small houses, and whatever may serve for comfort and ease, by land. Floating islands, constructed of logs, or of wooden-stuff prepared in a similar manner, as is to be done with stone, and of live trees, which may be reared so as to interlace one another, and strengthen the whole, may be covered with gardens and palaces, and propelled by powerful engines, so as to run at an