This is a very ingenious invention, but the work is very difficult, and can only be done by people who are regularly trained to do it. G.H.R. * * * * * FIRST BOUND VOLUMES OF.... =The Great Round World= _Containing Nos. 1 to 15_ =WILL BE READY MARCH 20TH= THESE VOLUMES WILL BE IN STRONG CLOTH, WITH TITLE ON BACK AND SIDE, WITH A HANDSOME DESIGN.... =Price, Postage Paid, $1.25= Subscribers wishing their numbers bound will send them (express paid), enclosing 35 cents to cover cost of binding. Missing numbers or supplements will be supplied until exhausted, at regular price. * * * * * WILLIAM BEVERLEY HARISON _3 & 5 West 18th Street, New York City_ * * * * * FOUR FAMOUS BOOKS Every boy and girl is interested in what is going on about them. The authors of this series have gathered together the most interesting kind of information, and have told it in a most entertaining way. Copies will be sent post-paid to any address upon receipt of price named. 1. =Foods and Beverages=, by E.A. BEAL, M.D. Contains reading lessons on the various kinds of Foods and their hygienic values; on Grains, Fruits, and useful Plants, with elementary botanical instruction relating thereto; and on other common subjects of interest and importance to all, old and young. 281 pages. Cloth, 60 cents. 2. =Every-Day Occupations=, by H. WARREN CLIFFORD, S.D. Quantities of useful facts entertainingly told, relating to work and workers. How Leather is Tanned; How Silk is Made; The Mysteries of Glass-Making, of Cotton Manufacture, of Cloth-Making, of Ship and House Building; The Secrets of the Dyer's Art and the Potter's Skill--all and more are described and explained in detail with wonderful clearness. 330 pages. Cloth, 60 cents. 3. =Man and Materials=, by WM. G. PARKER, M.E. Shows how man has raised himself from savagery to civilization by utilizing the raw material of the earth. Brings for the first time the wonderful natural resources of the United States to the notice of American children. The progress of the Metal-Working arts simply described and very attractively illustrated. 323 pages. Cloth, 60 cents. 4. =Modern Industries and Commerce=, by ROBERT LOUIS, PH.D. Treats of commerce and the different means of conveyance used in different eras. Highways, Canals. Tunnels, Railroads, and the Steam Engine are discussed in an entertaining way. Other subjects are Paper Manufacture, Newspapers, Electric Light, Atlantic Cable, the Telephone, and the principal newer commercial applications of Electricity, etc. 329 pages. Cloth, 60 cents. * * * * * WOOD'S Natural History Readers. By the REV. J.G. WOOD, M.A., _Author of "Homes without Hands," etc._