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1653 Eost Main Street: Rochester, New York 14609

Compilation © 1993 University Publications of America. | All rights reserved.

C1 Edison. Tapers


PART III (1887-1898)

Thomas E£. Jeffrey Microfilm Editor

Gregory Field Mary Ann Hellrigel Theresa M. Collins Paul B. Israel David W. Hutchings Robert A. Rosenberg Lisa Gitelman ; Karen A. Detig Leonard DeGraaf Gregory Jankunis Dennis D. Madden Douglas G. Tarr Editors Reese V. Jenkins

Director and Editor

Sponsors Rutgers, The State University of New Jersey National Park Service, Edison National Historic Site New Jersey Historical Commission Smithsonian Institution

University Publications of America

Bethesda, Maryland 1993

Edison signature used with permission of McGraw-Edison Company.

Thomas A. Edison Papers at Rutgers, The State University endorsed by

National Historical Publications and Records Commission 18 June 1981

Copyright © 1993 by Rutgers, The State University All rights reserved. No part of this publication including any portion of the guide and index or of the microfilm may be reproduced, stored in a retrieval system, or transmitted in any form by any means—graphic, electronic, mechanical, or chemical, including photocopying, recording or taping, or information storage and retrieval systems—without written permission of Rutgers, The State University, New Brunswick, New Jersey.

The original documents in this edition are from the archives at the Edison National Historic Site at West Orange, New Jersey.

ISBN 0-89093-702-8.


Reese V. Jenkins i Director and Editor i

Thomas E. Jeffrey Associate Director and Microfilm Editor

Robert A. Rosenberg Managing Editor, Book Edition

Helen Endick Assistant Director for Administration

Associate Editor Assistant Editors Paul B. Israel Keith A. Nier Gregory Field Research Associates Lisa Gitelman Theresa M. Collins Martha J. King David W. Hutchings Karen A. Detig Secretary Grace Kurkowski Intern Student Assistant

Gregory Jankunis Bethany Jankunis


Rutgers, The State University of National Park Service New Jersey John Maounis

Francis L. Lawrence Maryanne Gerbauckas Joseph J. Seneca Nancy Waters Richard F, Foley , George Tselos Rudolph M. Bell Smithsonian Institution

New Jersey Historical Commission Bernard Finn Howard L. Green Arthur P. Molella


James Brittain, Georgia Institute of Technology Alfred D. Chandler, Jr., Harvard University Neil Harris, University of Chicago Thomas Parke Hughes, University of Pennsylvania Arthur Link, Princeton University Nathan Reingold, Smithsonian Institution Robert E. Schofield, Iowa State University


William C. Hittinger (Chairman), RCA Corporation Edward J. Bloustein, Rutgers, The State University of New Jersey * Cees Bruynes, North American Philips Corporation Paul J. Christiansen, Charles Edison Fund Philip F. Dietz, Westinghouse Electric Corporation Roland W. Schmitt, General Electric Corporation Harold W. Sonn, Public Service Electric and Gas Company Morris Tanenbaum, AT&T



PRIVATE FOUNDATIONS The Alfred P. Sloan Foundation Charles Edison Fund

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en enna ae

oe tr

i i { i j

A Note on the Sources

The pages which have been filmed are the best copies available. Every technical effort possible has been made to ensure legibility.

Sass Re ——— TTY,


Reel duplication of the whole or of. any part of this film is prohibited... > In lieu of transcripts, however, ane enlarged photocopies of selected o items contained on these reels a _may be made in order to facilitate pene: _research. |

Feet RE ie Nie eS ae

a ; ips 5 Op pommel aia



Plant Operations Notebook, N-92-05-02.1

This notebook, which covers the period April 1892-February 1893, is a continuation of N-92-03-19. It was used by Edison and an unidentified author primarily for notes from experiments on reducing phosphorous. The tests are numbered 153-158. Test numbers 157 and 158 are complemented by two letters from Booth, Garrett & Blair, analytical chemists. An incomplete, inserted note by Edison regarding phosphorous tests is followed by a complete, variant version in another hand under the title, "Experiments made by Mr. Edison for the removal of Phosphorus from magnetic concentrates." The book also includes two tests for the gold properties of arsenical pyrites. The front cover is labeled "Mr. Edison’s Phosphorous Expts #2." The spine is labeled "Mr. Edisons notes." The pages are unnumbered. Approximately 25 pages have been used. Thirteen loose pages have been inserted into the book.

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Analytical Chemists,

406 Locust street, Philadelphia, Pa, June 16th, 1892,

Ne. J. & Pa. Concentrating Works, : Dear Sirs:-

= The two sanples No's 157 and 158, of Iron Concen- trates, which we received from you on the 14th inst, contain:

No, 157, Phosphorus,

° : ° s


No, 158, Phosphorus,

Sample. No, 156 we will send you as soon as we can repeat our

analysis, an accident having happened to our first determination,

(Signed) Booth, Garrett & Blair,

i 13% i !


- » t (77 ary vA BOOTH, GARRETT & BLAIR, GUA oil Dhl

ANALYTICAL CHEMISTS. y /) ap , es Hl Sy alli, June.1sth. 4!’.92

% ¢

N.dersey & Pennsylvania Concentg. Wks.

Edison Building Broad St.N.Y.

Gentlemen: \


: The sample of finely ground ore i



received from you a few days since marked “156” i @ontained as received ané@ not dried: i Phosbhorus......... . 0.005%


Yours respectfully, ]

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Plant Operations Notebook, N-93-01-10

This notebook covers the period January-February 1893. It was used by Charles Batchelor and Edison primarily for notes, drawings, and calculations from 63 numbered experiments on the magnetic separation process. Notes on experiment 62 are by Walter S. Mallory. The series is followed by drawings, notes, and measurements from a "Duster experiment" and an unnumbered "Concentrate Seperator Experiment." An unidentified graph is inserted near the end of the book. The pages are unnumbered, and the book has been used in both directions. Approximately 140 pages have been used.

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