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New Fourth Edition

Revised and Enlarged

Suplee's Mechanical Engineer's

Reference Book

A Hand-book of Tables, Formulas, and Methods for

Engineers, Students and Draftsmen By Henry Harrison Suplee, B.Sc., M.E. Member American Society of Mechanical Engineers ; Mombre de la Société Des Ingénieurs Civils de France; Mitglied des Vereines Deutscher Ingenieure;

Member of Tho Franklin Instituto.

Illustrated. 964 pages. 16mo. Full limp leather, round corners,

gilt edges, thumb index. $5.00 net

HIS book is intended to form a standard hand-book

for the mechanical engineer and the designer of

machinery, supplying in convenient form the general information which is constantly required. In the new fourth edition the few errors in the previous edition have been corrected and an Appendix of forty pages added, containing a variety of useful information.

Several features make this the one up-to-date complete accurate work for mechanical engineers,-more space has been devoted to Mathematics than in any other similar reference book in English,—the subject of machine design is very amply treated,—the arrangement of the matter is unexcelled, and fully illustrated, which together with the complete thumb index, makes it just the book for quick reference.

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J. B. LIPPINCOTT COMPANY Publishers

Philadelphia

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EN UCUNG BABY

vente

The Franklin Institute

DEVOTED TO SCIENCE AND THE MECHANIC ARTS
Edited by R. B. OWENS, E.E., M.A., D.Sc., F.R.S.C.

ASSOCIATE EDITORS:
Brig. Gen. James Allen
Harry C. Jones, Ph.D.

Le. Col. Geo. O. Squier, Ph.D. Wilder D. Bancroft, Ph.D. Harry F. Keller, Ph.D.

C. P. Steinmetz, Ph.D.
John J. Carty, D.Sc.
Gaetano Lanza, C.E.

S. W. Stratton, Sc.D.
A. S. Cushman, Ph.D.
Ralph Modjeski, D.Eng.

Admiral D. W. Taylor
Louis Duncan, Ph.D.
L. A. Osborne, M.E.

S. M. Vauclain, Sc.D.
A. S. Eve, D.Sc.
Albert Sauveur, B.S.

R. S. Woodward, Ph.D.
W. J. Humphreys, Ph.D. Edgar F. Smith, Ph.D.

A. F. Zahm, Ph.D.
COMMITTEE ON PUBLICATIONS:

Louis E. Levy, Chairman
George A. Hondley

W.C. L. Eglin

Geo. D. Rosengarten E. H. Sanborn

Vol. CLXXX

SEPTEMBER, 1915

No. 3

Contents Mechanical Stoking of Locomotives. By W. S. Bartholomew ... 253 On an Unbroken Alternating Current for Cable Telegraphy. By George O. Squier 311 The Physical Photometer in Theory and Practice. By W. W. Coblentz . . 335 On the Factor to be Used for the Calculation of the Phosphoric Acid in

Neumann's Method. The Factor as Influenced by the Water Used

for Washing the Yellow Precipitate. By S. L. Jodidi and E. H. Kellogg · 349 Notes from the U. S. Bureau of Standards:

Antenna Resistance . . . . . . . . . . . . . . . . .
A Preliminary Report on Electrolysis Mitigation in Elyria, Ohio ..... 370
Special Studies in Electrolysis Mitigation . . . . . . . . . . . . 371
A Method for Measuring Earth Resistivity . . . . . . . . . . . 373

Interference Measurement of Wave-lengths in the Iron Spectrum (2851-3701) . ..
The Franklin Institute :

Library Notes . . .'. . . . . . . . . . . . . . . . 377 Book Notices . . . . . . . . . . . . . . . . . . . . 378 Publications Received . . . . . . . . . . . . . . . . . 379

.... 334,368, 376, 380, 381 Announcements. . . . . . . . . . . .

xi-xvili

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Published by
THE FRANKLIN INSTITUTE OF THE STATE OF PENNSYLVANIA.

PHILADELPHIA
FIVE DOLLARS PER YEAR (Foreign Postage Additional). SINGLE NUMBERS, FIFTY CENTS.

Entered at the Post-office at Philadelphia, Pa., as second-class matter.

Copyright, 1915. by THE FRANKLIN INSTIN'TE.

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INDEX TO ADVERTISERS

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PROFESSIONAL CARDS, PAGES XXVI AND XXVII
PAGE

PAGE American Pipe and Construction Co. vii

Jennings, W. N., Business Photog

raphy ... ........ American Pulley Co., The,

xxiv Third cover page

Journal of the Association of EngiBancroft & Brother, Insurance,

neering Societies . ....... xxii Philadelphia.......... XXIV

Leeds & Northrup Co., The, ElectriBarnett, G. & H. Co., File Works,

cal Measuring Instruments,

Philadelphia Philadelphia .. Fourth cover page

.......... vji

Link-Belt Co., Conveying Ma-
Bilgram Machine Works, The, Bevel
Gears, Philadelphia ...... XXV

chinery, etc. ........... vi Borgner, Cyrus Co., Fire Bricks,

Lippincott, J. B. Co., Publishers etc., Philadelphia ......

ii, xxvi xxili Boyden Premium ......... xvii

Lonergan, J. E. Co., Qilers, etc.,

Philadelphia ........... ix Bradley Printing Co., Philadelphia . XXV

Longstreth, The Edward, Silver Chester Steel Castings Co., Phila

Medal ............. xviii delphia ............. ix McCaffrey File Co. . Fourth cover page Commercial Photo Engraving Co.. xxiii | Messner, Charles W., Electrical ConCresson, Elliott, Medal Award . xv, xix

tractor, Philadelphia ...... XXV Ellis Adding-Typewriter. ...... iii

Moore & White Co., The, Paper

making Machinery ....... iv Emerson, Gilbert D., Library Binding, Philadelphia ........ viii

Nice, Eugene E., Mfr. of Paints,

Varnishes, Fillers, etc. , ,... XXV Fidelity Trust Co. ........ xxiv

Oldach Company, Book-Binding . . viii FRANKLIN INSTITUTE, Alumni Association .......... iv, XXV

Olsen, Tinius, Testing Machine Co.,

Testing Machines and Hydraulic FRANKLIN INSTITUTE, Announce

Presses............. ix ments ...

X1

Philadelphia Book Co........ XXV FRANKLIN INSTITUTE, Awards of,

xiv-xviii Philadelphia Electric Co....... xxiii FRANKLIN INSTITUTE, Certificate Phosphor Bronze Smelting Co., Phila. vii

of Membership, Terms and Potts, The Howard N., Gold Medal. xviii Privileges ............ xiii

Powers - Weightman - Rosengarten FRANKLIN INSTITUTE, Indices to

Co., Chemists ......... viii Subject-matter and Authors . . . xix

Riehlé Bros. Testing Machine Co. . xxiv FRANKLIN INSTITUTE, Journals Wanted ........... xxiv

Sadtler, Samuel P. & Son, Consulting FRANKLIN INSTITUTE, Reprints for

Chemical Experts. ...... xxiv Sale .............. xxii

Scott, The John, Legacy Medal and FRANKLIN INSTITUTE, Library , iv, xix

Premium .......... xvi, xx FRANKLIN INSTITUTE, Officers,

Sellers, Wm. & Co., Inc., Machin

ists, Philadelphia .........V Committees, Meetings ...... xii FRANKLIN INSTITUTE, JOURNALS

Troemner, Henry, Scales ...... ix for Sale ............. xix Underwood Typewriter Co. FRANKLIN INSTITUTE, School of

Second cover page Mechanic Arts, xx, Fourth cover United Gas Improvement Co. . . . . xxi page.

Watson & McDaniel Co., PhiladelGreen-Starr Engineering Co. . . . xxiv

phia ••••••••••. . . . viii Hamlin & Morrison, Analytical

Weber, F. & Co., Draughting and Chemists, Philadelphia .... X

Engineering Instruments . ... XXV Hasselberg Bros., Signs, Philadel

Weston Electrical Instrument Co., phia ,...... ... ... A.

Ammeters and Voltmeters. ...X Howson & Howson, Patent Solicitors, Phila., New York and

| Wiedersheim & Fairbanks, Patents . XXV Washington ... Second cover page Wood, Alan, Iron and Steel Co. ... vi

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NEW SCIENTIFIC BOOKS A Text-book of Inorganic Chemistry

Volume I Part I.-An Introduction to Modern Inorganic Chemistry By J. NEWTON FRIEND, H. E. V. LITTLE and W. E. S. TURNER

Part II.—The Inert Gases

By H. VINCENT A. BRISCOE With frontispiece, plate and 88 other illustrations. 385 pages. Octavo.

Cloth. $3.00 net. This is the first volume in a new series of text-books dealing comprehensively with each branch of chemistry. While the books are not absolutely exhaustive, which would make them bulky and expensive, they give in detail the most important parts of each subject, and supplement lack of detail by copious references to the best literature. Every care has been taken to check the accuracy of the references, which will make the series a most valuable one.

Refuse Disposal

By ERNEST R. MATTHEWS With 8 detailed drawings and 91 illustrations in the text. 100 pages. 8vo.

Cloth. $2.00 net. A practical manual for municipal engineers, members of local authorities, etc. It sets forth modern methods of collection and disposal, embodying the latest practice, and shows what is being done all over the world along this line.

CONTENTS.-Collection of House Refuse, Unsatisfactory Methods of Disposal. Conversion into Manure. Destruction by Burning. Types of Destructors. The Meldrum Destructor. The Heenan Destructor. Other Types of Destructors. Dawson-Manfield Destructor. Installation for Villages, Hospitals, etc. Use for the Clinker. Chimney Construction. Steel Plate Chimney Construction. Principles of Vacuum Cleaning. Index.

A Manual of Oils, Resins and Paints

By HARRY INGLE, D.Sc., Ph.D., F.I.C. With many diagrams, figures and tables. 130 pages. 12mo. Cloth, $1.25 net.

A work for students and those analysts and works chemists who have had little or no experience with oils in practice, but are familiar with general chemistry. In the general analytical portion several new features are noticed and obsolete fests omitted. In the technical portion the necessary tests have been stated and as far as possible the conclusions of practical value which should be drawn from given.

CONTENTS. Introduction to Chemistry of Oils, Gums, etc. Physical Tests. Chemical Tests. Qualitative Tests for Oils. Classification of Oils. Systematic Examination of Oils, Fats and Waxes. Technological Analysis. Tables of Oil Constants. Index.

J. B. LIPPINCOTT COMPANY PHEADEDRA

PUBLISHERS
PHILADELPHIA

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