TOOLS FOR MACHINISTS AND `WOOD WORKERS, INCLUDING INSTRUMENTS OF MEASUREMENT. By JOSEPH G. HORNER. A practical treatise of 340 pages, fully illustrated and comprising a general description and classification of cutting tools and tool angles, allied cutting tools for machinists and woodworkers; shearing tools; scraping tools; saws; milling cutters; drilling and boring tools; taps and dies; punches and hammers; and the hardening, tempering and grinding of these tools. Tools for measuring and testing work, including standards of measurement; surface plates; levels; surface gauges; dividers; calipers; verniers; micrometers; snap, cylindrical and limit gauges; screw thread, wire and reference gauges, indicators, templets, etc. $3.50

MANUAL TRAINING

By Louis

ECONOMICS OF MANUAL TRAINING. ROUILLION. The only book that gives just the information needed by all interested in manual training, regarding buildings, equipment and supplies. Shows exactly what is needed for all grades of the work from the Kindergarten to the High and Normal School. Gives itemized lists of everything needed and tells just what it ought to cost. Also shows where to buy supplies. $1.50

MARINE ENGINEERING

MARINE ENGINES AND BOILERS, THEIR DESIGN AND CONSTRUCTION. By DR. G. BAUER, LESLIE S. ROBERTSON, and S. BRYAN DONKIN. This work is clearly written, thoroughly systematic, theoretically sound; while the character of its plans, drawings, tables, and statistics is without reproach. The illustrations are careful reproductions from actual working drawings, with some well-executed photographic views of completed engines and boilers. 89.00 net

MINING

1 ORE DEPOSITS OF SOUTH AFRICA WITH A CHAPTER ON HINTS TO PROSPECTORS. By J. P. JOHNSON. This book gives a condensed account of the ore-deposits at present known in South Africa. It is also intended as a guide to the prospector. Only an elementary knowledge of geology and some mining experience are necessary in order to understand this work. With these qualifications, it will materially assist one in his search for metalliferous mineral occurrences and, so far as simple ores are concerned, should enable one to form some idea of the possibilities of any they may find. Among the chapters given are: Titaniferous and Chromiferous Iron Oxides-Nickel-Copper-Cobalt-Tin-Molyb

denum-Tungsten-Lead-Mercury-Antimony-Iron-Hints

to Prospectors.

Illustrated.

$2.00

PRACTICAL COAL MINING. By T. H. COCKIN. An important work, containing 428 pages and 213 illustrations, complete with practical details, which will intuitively impart to the reader, not only a general knowledge of the principles of coal mining, but also considerable insight into allied subjects. The treatise is positively up to date in every instance, and should be in the hands of every colliery engineer, geologist, mine operator, superintendent, foreman, and all others who are interested in or connected with the industry. $2.50

PHYSICS AND CHEMISTRY OF MINING. By T. H. BYROM. A practical work for the use of all preparing for examinations in mining or qualifying for colliery managers' certificates. The aim of the author in this excellent book is to place clearly before the reader useful and authoritative data which will render him valuable assistance in his studies. The only work of its kind published. The information incorporated in it will prove of the greatest practical utility to students, mining engineers, colliery managers, and all others who are specially interested in the present-day treatment of mining problems. 160 pages. Illustrated. $2.00

MISCELLANEOUS

BRONZES. Henley's Twentieth Century Receipt Book contains many practical formulas on bronze casting, imitation bronze, bronze polishes, renovation of bronze. See page 24 for full description of this book. $3.00

EMINENT ENGINEERS. By DWIGHT GODDARD. Everyone who appreciates the effect of such great inventions as the Steam Engine, Steamboat, Locomotive, Sewing Machine, Steel Working, and other fundamental discoveries, is interested in knowing a little about the men who made them and their achieve

ments.

Mr. Goddard has selected thirty-two of the world's engineers who have contributed most largely to the advancement of our civilization by mechanical means, giving only such facts as are of general interest and in a way which appeals to all, whether mechanics or not. 280 pages, 35 illustrations. $1.50

LAWS OF BUSINESS, By THEOPHILUS PARSONS, LL.D. The Best Book for Business Men ever Published. Treats clearly of Contracts, Sales, Notes, Bills of Exchange, Agency, Agreement, Stoppage in Transitu, Consideration, Limitations, Leases, Partnership, Executors, Interest, Hotel Keepers, Fire and Life Insurance, Collections, Bonds, Frauds, Receipts, Patents, Deeds, Mortgages, Liens, Assignments, Minors, Married Women, Arbitration, Guardians, Wills, etc. Three Hundred Approved Forms are given. Every Business Man should have a copy of this book for ready reference. The book is bound in full sheep, and Contains 864 Octavo Pages. Our special price. $3.50

PATTERN MAKING

PRACTICAL PATTERN MAKING. By F. W. BARROWS. This is a very complete and entirely practical treatise on the subject of pattern making, illustrating pattern work in wood and metal. From its pages you are taught just what you should know about pattern making. It contains a detailed description of the materials used by pattern makers, also the tools, both those for hand use, and the more interesting machine tools; having complete chapters on The Band Saw, The Buzz Saw, and The Lathe. Individual patterns of many different kinds are fully illustrated and described, and the mounting of metal patterns on plates for molding machines is included. $2.00

PERFUMERY

HENLEY'S TWENTIETH CENTURY BOOK OF RECEIPTS, FORMULAS AND PROCESSES. Edited by G. D. HISCOX. The most valuable Techno-Chemical Receipt Book published. Contains over 10,000 practical Receipts many of which will prove of special value to the perfumer, a mine of information, up to date in every respect. Cloth, $3.00; half morocco. See page 24 for full description of this book.

$4.00

PERFUMES AND THEIR PREPARATION. By G. W. ASKINSON, Perfumer. A comprehensive treatise, in which there has been nothing omitted that could be of value to the Perfumer. Complete directions for making handkerchief perfumes, smelling-salts, sachets, fumigating pastilles; preparations for the care of the skin, the mouth, the hair, cosmetics, hair dyes and other toilet articles are given, also a detailed description of aromatic substances; their nature, tests of purity, and wholesale manufacture. A book of general, as well as professional interest, meeting the wants not only of the druggist and perfume manufacturer, but also of the general public. Third edition. 312 pages. Illustrated. $3.00

PLUMBING

MODERN PLUMBING ILLUSTRATED. By R. M. STARBUCK. The author of this book, Mr. R. M. Starbuck, is one of the leading authorities on plumbing in the United States. The book represents the highest standard of plumbing work. It has been adopted and used as a reference book by the United States Government, in its sanitary work in Cuba, Porto Rico and the Philippines, and by the principal Boards of Health of the United States and Canada.

It gives Connections, Sizes and Working Data for All Fixtures and Groups of Fixtures. It is helpful to the Master Plumber in Demonstrating to his customers and in figuring work. It gives the Mechanic and Student quick and easy Access to the best Modern Plumbing Practice. Suggestions for Estimating Plumbing Construction are contained in its pages. This book represents, in a word, the latest and best up-to-date practice, and should be in the hands of every architect, sanitary engineer and plumber who wishes to keep himself up to the minute on this important feature of construction. 400 octavo pages, fully illustrated by 55 full-page engravings. $4.00

RUBBER

HENLEY'S TWENTIETH CENTURY BOOK OF RECEIPTS, FORMULAS AND PROCESSES. Edited by GARDNER D. HISCOX. Contains upward of 10,000 practical receipts, including among them formulas on artificial rubber. See page 24 for full description of this book. $3.00

RUBBER HAND STAMPS AND THE MANIPULATION OF INDIA RUBBER. By T. O'CONOR SLOANE. This book gives full details on all points, treating in a concise and simple manner the elements of nearly everything it is necessary to understand for a commencement in any branch of the India Rubber Manufacture. The making of all kinds of Rubber Hand Stamps, Small Articles of India Rubber, U. S. Government Composition, Dating Hand Stamps, the Manipulation of Sheet Rubber, Toy Balloons, India Rubber Solutions, Cements, Blackings, Renovating Varnish, and Treatment for India Rubber Shoes, etc.; the Hektograph Stamp Inks, and Miscellaneous Notes, with a Short Account of the Discovery, Collection, and Manufacture of India Rubber are set forth in a manner designed to be readily understood, the explanations being plain and simple. Second edition. Illustrated. $1.00

144 pages.

SAWS

SAW FILING 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. New edition, revised and enlarged. Illustrated.

SCREW CUTTING

$1.00

THREADS AND THREAD CUTTING. BY COLVIN and STABEL. This clears up many of the mysteries of threadcutting, such as double and triple threads, internal threads, catching threads, use of hobs, etc. Contains a lot of useful hints and several tables. 25 cents

SHEET METAL WORK

DIES, THEIR CONSTRUCTION AND USE FOR THE MODERN WORKING OF SHEET METALS. By J. V. WOODWORTH. A new book by a practical man, for those who wish to know the latest practice in the working of sheet metals. It shows how dies are designed, made and used, and those who are engaged in this line of work can secure many valuable suggestions. $3.00

en

PUNCHES, DIES AND TOOLS FOR MANUFACTURING IN PRESSES. By J. V. WOODWORTH. A work of 500 pages and illustrated by nearly 700 engravings, being an cyclopedia of die-making, punch-making, die sinking, sheetmetal working, and making of special tools, subpresses, devices and mechanical combinations for punching, cutting, bending, forming, piercing, drawing, compressing, and assembling sheetmetal parts and also articles of other materials in machine tools. $4.00

STEAM ENGINEERING

By W.

AMERICAN STATIONARY ENGINEERING. E. CRANE. A new book by a well-known author. Begins at the boiler room and takes in the whole power plant. Contains the result of years of practical experience in all sorts of engine rooms and gives exact information that cannot be found elsewhere. It's plain enough for practical men and yet of value to those high in the profession. Has a complete examination for a license. $2.00

BOILER ROOM CHART. By GEO. L. FOWLER. A Chart -size 14 x 28 inches-showing in isometric perspective the mechanisms belonging in a modern boiler room. Water tube boilers, ordinary grates and mechanical stokers, feed water heaters and pumps comprise the equipment. The various parts are shown broken or removed, so that the internal construction is fully illustrated. Each part is given a reference number, and these, with the corresponding name, are given in a glossary printed at the sides. This chart is really a dictionary of the boiler room-the names of more than 200 parts being given. It is educational-worth many times its cost. 25 cents

ENGINE RUNNER'S CATECHISM. By ROBERT GRIMSHAW. Tells how to erect, adjust, and run the principal steam engines in use in the United States. The work is of a handy size for the pocket. To young engineers this catechism will be of great value, especially to those who may be preparing to go forward to be examined for certificates of competency; and to engineers generally it will be of no little service as they will find in this volume more really practical and useful information than is to be found anywhere else within a like compass. 387 pages. Sixth edition.

$2.00

By

ENGINE TESTS AND BOILER EFFICIENCIES. J. BUCHETTI. This work fully describes and illustrates the method of testing the power of steam engines, turbine and explosive motors. The properties of steam and the evaporative power of fuels. Combustion of fuel and chimney draft; with formulas explained or practically computed. 255 pages, 179 illustrations. $3.00

HORSE POWER CHART. Shows the horse power of any stationary engine without calculation. No matter what the cylinder diameter or stroke; the steam pressure or 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 dealing with the care and management of Boilers, Engines, Pumps, Superheated Steam, Refrigerating Machinery, Dynamos, Motors, Elevators, Air Compressors, and all other branches with which the modern Engineer must be familiar. Nearly 200 Questions with their Answers on Steam and Electrical Engineering, likely to be asked by the Examining Board, are included. 487 pages, 405 engravings. $3.00

STEAM ENGINE CATECHISM. By ROBERT GRIMSHAW. This volume of 413 pages is not only a catechism on the question and answer principle; but it contains formulas and worked-out answers for all the Steam problems that appertain to the operation and management of the Steam Engine. Illustrations of various valves and valve gear with their principles of operation are given. 34 tables that are indispensable to every engineer and fireman that wishes to be progressive and is ambitious to become master of his calling are within its pages. It is a most valuable instructor in the service of Steam Engineering. Leading engineers have recommended it as a valuable educator for the beginner as well as a reference book for the engineer. Sixteenth edition. $2.00

STEAM ENGINEER'S ARITHMETIC. By COLVINCHENEY. A practical pocket book for the Steam Engineer. Shows how to work the problems of the engine room and shows "why." Tells how to figure horse-power of engines and boilers; area of boilers; has tables of areas and circumferences; steam tables; has a dictionary of engineering terms. Puts you onto all of the little kinks in figuring whatever there is to figure around a power plant. Tells you about the heat unit; absolute zero; adiabatic expansion; duty of engines; factor of safety; and 1,001 other things; and everything is plain and simplenot the hardest way to figure, but the easiest. 50 cents