THE SCIENTIFIC AMERICAN.--This paper is the oldest in its peculiar province in the United States, and was, for many years, the only one. More recently others have arisen, and are following in its footsteps; but the SCIENTIFIC AMERICAN still maintains its position as the best American journal of the inventive arts. Its Patent Office department alone is invaluable to inventors, while its editorial articles, illustrations, etc., give not only information, but a constant stimulus to the productive faculty.--_Mobile Register_. * * * * * Among the papers which we could not very well do without is the SCIENTIFIC AMERICAN, issued from the well-known office of Munn & Co., 37 Park Row, New York. Carefully edited, nicely printed, well illustrated, it is not only a complete record of the progress of useful inventions, but a trustworthy guide to many of the scientific topics that enlist attention at the present day. No one can be a reader of this most valuable journal, without being kept well informed as to current matters of scientific discovery.--_Congregationalist_ (Boston). * * * * * THE SCIENTIFIC AMERICAN.--In another column we publish the prospectus of this great paper, and would direct our readers to it. It should be on the work bench of every mechanic, and particularly the young men of our country, upon whose intelligence and mechanical skill depends the future dignity of labor and prosperity of American arts and sciences.--_Monitor_ (Huntington, Pa.) * * * * * We could fill our pages with similar notices, but will close with the following from our cotemporary _De Hope_, published at Holland, Mich., which we doubt not will be read with interest: Wij plaatsen in dit Nummer het prospectus van den SCIENTIFIC AMERICAN. Het is een zeer schoon blad, dat vooral behoort gelezen te worden door Handwerkslieden. Nieuwe uitvindingen, verbeteringen op het terrein van werktuigkunde, enz, worden daar steeds in vermeld en beschreven. De prijs is zeer matig voor zulk cen blad; drie dollars per jaar. Dat belangstellenden de advertentie lezen. * * * * * CHINESE METHODS OF PRESERVING EGGS.