=Fifth Series. Principal Contents.=--Diamond Cutting, Laboratory Apparatus, Copying, Filtering, Fire-proofing. Magic Lanterns, Metal Work. Percolation, Illuminating Agents, Tobacco Pipes, Taps, Tying and Splicing. Tackle Repairing Books. Netting, Walking Sticks Boat-Building, etc., etc. 440 pages, 373 illustrations, 12mo, cloth, $2.00. =EACH SERIES has its own Contents and Index and is complete in itself.= * * * * * SPONS' ENCYCLOP∆DIA OF THE Industrial Arts, Manufactures AND Commercial Products. EDITED BY G. G. ANDRE, F.G.S., Asso.-M. Inst. C.E. AND C. G. WARNFORD LOCK, F.L.S., F.G.S., M.I.M.M. Assisted by many prominent Manufacturers, Chemists and Scientists. This encyclopedia is written by practical men for practical men. _Raw Materials_ form perhaps its most important feature and are dealt with in a way never before attempted. _Manufacturers_ are discussed in detail from the manufacturing standpoint by manufacturers of acknowledged reputation. Special consideration is given to the utilization of waste, the prevention of nuisance, and the question of adulterations. Technicalities are explained, and bibliographies (English, American, French, German, etc.), are appended to the principal articles. Over 2,000 pages and nearly 2,000 illustrations. We are offering a _Limited_ number of sets of a =SPECIAL THREE VOLUME EDITION HANDSOMELY BOUND IN HALF-MOROCCO, CLOTH-GILT, MARBLED EDGES, $15.00 NET.= A full descriptive circular can be had on application. * * * * * Dubelle's Famous Formulas. KNOWN AS Non Plus Ultra Soda Fountain Requisites of Modern Times. By G. H. DUBELLE. _A practical Receipt Book for Druggists, Chemists, Confectioners and Venders of Soda Water._ SYNOPSIS OF CONTENTS. INTRODUCTION.--Notes on natural fruit juices and improved methods for their preparation. Selecting the fruit. Washing and pressing the fruit. Treating the juice. Natural fruit syrups and mode of preparation. Simple or stock syrups. =FORMULAS.=