be found matter of intense interest and immeasurably practical value to the scientific A mine of information, and up-to-date in every respect. A book which will prove of WHAT IS SAID OF THIS BOOK: "Your Twentieth Century Book of Recipes, Formulas, and Processes duly received. "I purchased your book 'Henley's Twentieth Century Book of Recipes, Formulas and "THE BOOK WORTH THREE HUNDRED DOLLARS " "On close examination of your 'Twentieth Century Receipt Book,' I find it to be a very valuable and useful book with the very best of practical information obtainable. The price of the book, $3.00, is very small in comparison to the benefits which one can obtain from it. I consider the book worth fully three hundred dollars to anyone." -DR. A. C. SPETTS, New York. "ONE OF THE WORLD'S MOST USEFUL BOOKS". 66 Some time ago, I got one of your "Twentieth Century Books of Formulas' and have made my living from it ever since. I am alone since my husband's death with two small children to care for and am trying so hard to support them. I have customers who take from me Toilet Articles I put up, following directions given in the book, and I have found everyone of them to be fine."-MRS. J. H. MCMAKEN, West Toledo, Ohio. RUBBER RUBBER HAND STAMPS AND THE MANIPULATION OF INDIA RUBBER. This book gives full details on all points, treating in a concise and simple manner the SAWS SAW FILINGS AND MANAGEMENT OF SAWS. BY ROBERT GRIMSHAW. A practical hand-book on filing, gumming, swaging, hammering, and the brazing of band saws, the speed, work, and power to run circular saws, etc. A handy book for those who have charge of saws, or for those mechanics who do their own filing, as it deals with the proper shape and pitches of saw teeth of all kinds and gives many useful hints and rules for gumming, setting, and filing, and is a practical aid to those who use saws for any purpose. Complete tables of proper shape, pitch, and saw teeth as well as sizes and number of teeth of various saws are included. Third edition, revised and enlarged. Illustrated. Price STEAM ENGINEERING AMERICAN STATIONARY ENGINEERING. By W. E. CRANE. $1.00 This book begins at the boiler room and takes in the whole power plant. A plain talk on every-day work about engines, boilers, and their accessories. It is not intended to be scientific or mathematical. All formulas are in simple form so that any one understanding plain arithmetic can readily understand any of them. The author has made this the most practical book in print; has given the results of his years of experience, and has included about all that has to do with an engine room or a power plant. You are not left to guess at a single point. You are shown clearly what to expect under the various conditions; how to secure the best results; ways of preventing "shut downs" and repairs; in short, all that goes to make up the requirements of a good engineer, capable of taking charge of a plant. It's plain enough for practical men and yet of value to those high in the profession. A partial list of contents is: The boiler room, cleaning boilers, firing, feeding; pumps, inspection and repair; chimneys, sizes and cost; piping; mason work; foundations; testing cement; pile driving; engines, slow and high speed; valves; valve setting; Corliss engines, setting valves, single and double eccentric; air pumps and condensers; different types of condensers; water needed; lining up; pounds; pins not square in crosshead or crank; engineers' tools; pistons and piston rings; bearing metal; hardened copper; drip pipes from cylinder jackets; belts, how made, care of; oils; greases; testing lubricants; rules and tables, including steam tables; areas of segments; squares and square roots; cubes and cube root; areas and circumferences of circles. Notes on: Brick work; explosions; pumps; pump valves; heaters, economizers; safety valves; lap, lead, and clearance. Has a complete examination for a license, etc., etc. Second edition. 285 pages. Illustrated. Price EMINENT ENGINEERS. By DWIGHT GODDARD. $2.00 Everyone who appreciates the effect of such great inventions as the Steam Engine, Mr. Goddard has selected thirty-two of the world's engineers who have contributed ENGINE RUNNER'S CATECHISM. By ROBERT GRIMSHAW. A practical treatise for the stationary engineer, telling how to erect, adjust, and run The questions asked throughout the catechism are plain and to the point, and the HORSEPOWER CHART. Shows the horsepower of any stationary engine without calculation. No matter what the cylinder diameter of stroke, the steam pressure of cut-off, the revolutions, or whether condensing or non-condensing, it's all there. Easy to use, accurate, and saves time and calculations. Especially useful to engineers and designers. 50 cents MODERN STEAM ENGINEERING IN THEORY AND PRACTICE. By GARDNER D. HISCOX. This is a complete and practical work issued for Stationary Engineers and Firemen, Among the chapters are: Historical: steam and its properties; appliances for the STEAM ENGINE CATECHISM. By ROBERT GRIMSHAW. This unique volume of 413 pages is not only a catechism on the question and answer STEAM ENGINEER'S ARITHMETIC. By COLVIN-CHENEY. A practical pocket-book for the steam engineer. Shows how to work the problems of STEAM HEATING AND VENTILATION PRACTICAL_STEAM, HOT-WATER HEATING AND VENTILATION. By A. G. KING. This book is the standard and latest work published on the subject and has been prepared for the use of all engaged in the business of steam, hot-water heating, and ventilation. It is an original and exhaustive work. Tells how to get heating contracts, how to install heating and ventilating apparatus, the best business methods to be used, with "Tricks of the Trade" for shop use. Rules and data for estimating radiation and cost and such tables and information as make it an indispensable work for everyone interested in steam, hot-water heating, and ventilation. It describes all the principal systems of steam, hot-water, vacuum, vapor, and vacuum-vapor heating, together with the new accelerated systems of hot-water circulation, including chapters on up-to-date methods of ventilation and the fan or blower system of heating and ventilation. Containing chapters on: I. Introduction. II. Heat. III. Evolution of artificial heating apparatus. IV. Boiler surface and settings. V. The chimney flue. VI. Pipe and fittings. VII. Valves, various kinds. VIII. Forms of radiating surfaces. IX. Locating of radiating surfaces. X. Estimating radiation. XI. Steam heating apparatus. XII. Exhaust-steam heating. XIII. Hot-water heating. XIV. Pressure systems of hot-water work. XV. Hot-water appliances. XVI. Greenhouse heating. XVII. Vacuum vapor and vacuum exhaust heating. XVIII. Miscellaneous heating. XIX. Radiator and pipe connections. XX. Ventilation. XXI, Mechanical ventilation and hot-blast heating. XXII. Steam appliances. XXIII. District heating. XXIV. Pipe and boiler covering. XXV. Temperature regulation and heat control. XXVI. Business methods. XXVII. Miscellaneous. XXVIII. Rules, tables, and useful information. 367 pages. 300 detailed engravings. Second Edition-Revised. Price. $3.00 500 PLAIN ANSWERS TO DIRECT QUESTIONS ON STEAM, HOT-WATER, VAPOR AND VACUUM HEATING PRACTICE. By ALFRED G. KING. This work, just off the press, is arranged in question and answer form; it is intended as a guide and text-book for the younger, inexperienced fitter and as a reference book for all fitters. This book tells "how" and also tells "why." No work of its kind has ever been published. It answers all the questions regarding each method or system that would be asked by the steam fitter or heating contractor, and may be used as a text or reference book, and for examination questions by Trade Schools or Steam Fitters' Associations. Rules, data, tables and descriptive methods are given, together with much other detailed information of daily practical use to those engaged in or interested in the various methods of heating. Valuable to those preparing for examinations. Answers every question asked relating to modern Steam, Hot-Water, Vapor and Vacuum Heating. Among the contents are: The Theory and Laws of Heat. Methods of Heating. Chimneys and Flues. Boilers for Heating. Boiler Trimmings and Settings. Radiation. Steam Heating. Boiler, Radiator and Pipe Connections for Steam Heating. Hot Water Heating. The Two-Pipe Gravity System of Hot Water Heating. The Circuit System of Hot Water Heating. The Overhead System of Hot Water Heating. Boiler, Radiator and Pipe Connections for Gravity Systems of Hot Water Heating. Accelerated Hot Water Heating. Expansion Tank Connections. Domestic Hot Water Heating. Valves and Air Valves. Vacuum Vapor and Vacuo-Vapor Heating. Mechanical Systems of Vacuum Heating. Non-Mechanical Vacuum Systems. Vapor Systems. Atmospheric and Modulating Systems. Heating Greenhouses. Information, Rules and Tables. 200 pages, 127 illustrations. Octavo. Cloth. Price $1.50 STEEL STEEL: ITS SELECTION, ANNEALING, HARDENING, AND TEMPERING. By E. R. MARKHAM. This work was formerly known as "The American Steel Worker," but on the publication of the new, revised edition, the publishers deemed it advisable to change its title to a more suitable one. It is the standard work on Hardering, Tempering, and Annealing Steel of all kinds. This book tells how to select, and how to work, temper, harden, and anneal steel for everything on earth. It doesn't tell how to temper one class of tools and then leave the treatment of another kind of tool to your imagination and judgment, but it gives careful instructions for every detail of every tool, whether it be a tap, a reamer or just a screw-driver. It tells about the tempering of small watch springs, the hardening of cutlery, and the annealing of dies. In fact, there isn't a thing that a steel worker would want to know that isn't included. It is the standard book on selecting, hardening, and tempering all grades of steel. Among the chapter headings might be mentioned the following subjects: Introduction; the workman; steel; methods of heating; heating tool steel; forging; annealing; hardening baths; baths for hardening; hardening steel; drawing the temper after hardening; examples of hardening; pack hardening; case hardening; spring tempering; making tools of machine steel; special steels; steel for various tools; causes of trouble; high speed steels, etc. 400 pages. Very fully illustrated. Fourth Edition. $2.50 HARDENING, TEMPERING, ANNEALING, AND FORGING OF STEEL. By J. V. WOODWORTH. Price A new work treating in a clear, concise manner all modern processes for the heating, annealing, forging, welding, hardening, and tempering of steel, making it a book of great practical value to the metal-working mechanic in general, with special directions for the successful hardening and tempering of all steel tools used in the arts, including milling cutters, taps, thread dies, reamers, both solid and shell, hollow mills, punches and dies, and all kinds of sheet metal working tools, shear blades, saws, fine cutlery, and metal cutting tools of all description, as well as for all implements of steel both large and small. In this work the simplest and most satisfactory hardening and tempering processes are given. The uses to which the leading brands of steel may be adapted are concisely presented, A chapter devoted to the different processes for case-hardening is also included, and TRACTORS Price THE MODERN GAS TRACTOR. By VICTOR W. PAGÉ. $2.50 A complete treatise describing all types and sizes of gasoline, kerosene, and oil tractors. Considers design and construction exhaustively, gives complete instructions for care, operation and repair, outlines all practical applications on the road and in the field. The best and latest work on farm tractors and tractor power plants. A work needed by farmers, students, blacksmiths, mechanics, salesmen, implement dealers, designers, and engineers. 500 pages. Nearly 300 illustrations and folding plates. Price $2.00 THE HOME-MADE TRACTOR. By XENO W. PUTNAM. A practical treatise on the construction of small and special purpose tractors in the home workshop from the odds and ends of cast-off machinery available on nearly every farm. This work shows the farmer how, at small expense, to make his gasoline engine conveniently portable by making it self-moving. It guides him in the construction of a practical farm tractor that is capable of hauling, harvesting, plowing and doing all the ordinary farm work in which the propulsion of other machinery is required. Twenty-four chapters are contained in this book and it is illustrated with over 153 working engravings showing many successfully built and tested home-made tractors. Bound in cloth, 12mo. |