As regards the power to be used in the manufacture, steam has a decided advantage over water, as in the plastic state of the mass there exists a variety of proceedings, according to the nature of the material to be made or the object to be imitated, in which steam would have to play a conspicuous part. But it must be in this country as in America and elsewhere, that as the manufacture extends, so will the best and most suitable machinery and power be devised and rendered subservient to its development. When the manufacture is favored with the advantages of steam power, and large capital, the most profitable results have been and are attendant upon it; and perhaps there are few manufactures which require less comparative space, and in which less waste is consequent. There should not be a particle of the substance lost, as all cuttings, sweepings of the factory, and the very dust upon all things around, can be re-worked with profit and advantage. Indeed, it is here that we should make publicly known the fact that every article of vulcanized India-rubber, bears its value according to its make and kind, however old it may be. As a general impression exists that India-rubber when once vulcanized cannot be again used, this statement should be borne in mind, and the greatest publicity given to it in order that the millions of pounds now lying waste in the shape of galoshoes, &c., may not be heedlessly thrown away. The old Jew clothesmen will at once open their eyes to the fact, and the valet or humble servant girl will find in their collection and sale an increase to their perquisites, in proportion to the consciences of those with whom they deal.