In all branches of human labor, in all phases of human ingenuity, for above half a century, this vast increase—both of the application and the power of machinery—has been in progress; constantly awakening the fears and jealousies, sometimes inducing the overt opposition and illegal violence of the working classes, as cheapening their labor, and about ultimately to subvert their trade and destroy their means of subsistence. Than these fears and jealousies, nothing can be more erroneous, not to say absurd. For it is no longer a theory, but an established fact, that consumption of, and demand for, any article grows almost in arithmetical progression from the reduction of its price, to such a degree, as to render it available to all classes. Two examples, alone, will be sufficient to make this clear:— Some twenty years ago, the renewal of the English East India Company’s charter was refused by Parliament, and the tea-trade of Great Britain opened to all British bottoms[1]. The price of tea was reduced by above one-half, and the company exclaimed loudly, as companies ever do, against the unjust legislation, which must needs ruin them. Mark the result, however. The price of tea fell one-half; the consumption of tea increased—we speak generally—almost ten-fold. The company never were more prosperous than now. Again—within the same period, inland postage in Great Britain was reduced to a uniform rate of one penny sterling, not without much opposition and strenuous contest, the opponents insisting that the department must become a burden on the state, from sheer inability to do the work of transportation at prices merely nominal. The results are before the public, and not a boy but knows that they precisely reverse the prediction. The same thing is true of the growth of the cotton trade; of the growth of agricultural productions: and last, not least, and most of all to the purpose, of the growth of the so-called _penny_-press of New York, and the United States in general. We use the term so-called, because though nominally penny, most, if not all, of the very paying papers of this class are really two-penny papers. [Illustration: GOLD STREET WORKS. CITY, NEW YORK. GROUND PLAN.] While we were considering these matters, to which consideration we were led by a visit to the extraordinary machine works of Messrs. Hoe & Co., the inventors and manufacturers of the great fast power-presses, which have effected the revolution of which we have spoken, we accidentally stumbled upon the following article from the columns of the New York Tribune; and it is so entirely germane to the matter, that we have no hesitation in quoting the former portion of it, without alteration or comment. The latter portion we omit, because we entirely disagree with Mr. Greely in the deduction which he draws from the admitted facts, as we do with most of his socialistic and communistic notions.