Munn & Co. have also had Thirty-Seven Years' practice before the Patent Office, and have prepared more than One Hundred Thousand applications for patents in the United States and foreign countries. Caveats, Trade-Marks, Copyrights, Assignments, and all other papers for securing to inventors their rights in the United States, Canada, England, France, Germany and other foreign countries, prepared at short notice and on reasonable terms. Information as to obtaining patents cheerfully given without charge. Hand-books of information sent free. Patents obtained through Munn & Co. are noticed in the Scientific American free. The advantage of such notice is well understood by all persons who wish to dispose of their patents. Address MUNN & CO. Office SCIENTIFIC AMERICAN, 361 Broadway, New York. * * * * * JOHN N. McCLINTOCK & CO., Publishers, Printers, Stereotypers, and Electrotypers, have facilities for doing Book Work and Job Printing. _ESTIMATES CHEERFULLY FURNISHED._ 31 MILK ST., ROOM 46, BOSTON, MASS. * * * * * PHOTO-ELECTROTYPE Is the name of a new process of _ENGRAVING BY PHOTOGRAPHY_ at less than ONE-HALF THE COST OF WOOD ENGRAVING! The plates are equal to the finest wood cuts, and in point of depth, superior. We furnish an electrotype all ready for the printer's use. We can do every description of work, Machinery, Furniture, Buildings, Autograph Letters, Illustrations for Trade Catalogues, etc. For specimen sheet of our work and further particulars address PHOTO-ELECTROTYPE CO., 63 OLIVER STREET, BOSTON. * * * * * _ANTIQUE_ Views of Ye Town of Boston. By JAMES H. STARK. This is the title of one of the most valuable contributions to the HISTORY of BOSTON that has been made in many years. It embraces a series of upwards of ONE HUNDRED VIEWS of OLD BOSTON, that have been gathered from private and public collections, and most faithfully reproduced by the Photo-Electrotype Engraving Company's process of Boston. The Book is handsomely BOUND IN CLOTH. On the front cover is a view of the Old State House, embossed in gold; on the back cover is a veneer made from the Old Elm, on which is printed a view of the old tree, and an autograph letter from Mayor Cobb (who was mayor of Boston at the time of the destruction of the tree), certifying to its authenticity. It is a book of 400 pages, imperial octavo, and a limited number is offered at $6.00 PER COPY. ADDRESS PHOTO-ELECTROTYPE CO., 63 OLIVER STREET, BOSTON. * * * * * STARK'S ILLUSTRATED BERMUDA GUIDE.