CONTENTS.

Frontispiece.—Portrait of Alexander Graham Bell, Seventh President of

the Institute.—1891-1892.

PAGE.

Report of the Sub-Committee on Provisional Programme for the

International Electrical Congress of 1898 1

Regular Meeting, January 17, 1893.

Electrical Recording Meters.—(Illustrated.) By Caryl D. Haskins,

of Boston. Mass. Discussion by Townsend Wolcott, R. O. Hein-

rich, F W. Tischendoerfer, A. E. Kennelly, C. R. Van Trump

and J. Overbury 28

Regular Meeting, February 21, 1893. Jit

The Most Economical Age of Incandescent Lamps.—(Illustrp ''^

By Carl Hering, of Philadelphia. Discussion by B. F. Th'

Elihu Thomson, W. D. Weaver, Geo. Hill, Townsend T

and W. J. Hammer 65

Note on the Disruptive Strength of Dielectrics.—(Illustrs y

C. P. Steinmetz, of Lynn, Mass. Discussion by J. B. *-*'■ Js,

F. B. Crocker, Carl Hering and Alexander Macfarlane...-. ... 85

Regular Meeting, March 21, 1893.

The Cost of Steam Power Produced with Engines of Different.

Types under Practical Conditions with Supplement Rela' ng

to Water Power.—By Charles E. Emery, of New York, dis-

cussion by George Forbes, F. J. Sprague. Samuel McElroy, J. F.

Holloway, John H. Barr and C. O. Mailloux 119

An Early Dynamo.—By Townsend Wolcott, of Brooklyn, N. Y 166

Regular Meeting, April 18, 1893.

Impedance.— (Illustrated.) By A. E. Kennelly, of Orange, N. T.
Discussion by W. J. Hammer, D. Burnett, T. D. Lockwood,
M. I. Pupin, W. E. Geyer, C. S. Bradley and C. P. Steinmetz... 119

Annual Meeting, May 10, 1893.

Report of Council 234

Treasurer's Report 237

General Meeting, May 17, 1893.

The Action of Continuous and Alternating Currents on Fuse
Metals.—(Illustrated.) By Chas. P. Matthews, of Ithaca, N. Y.
Discussion by E. J. Houston, E. G. Willyoung, E. L. Nichols
and M. C. Canfield. 251

A Modified Deprcz-D'Arsonval Galvanometer.—(Illustrated.) By

Lieut. C. D. Parkhurst, of Fort McHenry, Md. Discussion by

E. G. Willyoung, Edward Weston, Louis Duncan and R. C. Car-

penter 270

The Variation in Economy of the Steam Engine due to Variation

in Load.—(Illustrated.) By R. C. Carpenter. Discussion by

Louis Duncan, F. A. C. Perrine and C. E. Emery 297

An Automatic Printing Speed Counter for Dynamo Shafting.—

(Illustrated.) By Geo. S. Moler 331

Diseases of Dynamos.—By Lieut. C. D. Parkhurst 335

A New Method and Apparatus for Measuring Conductivity. By

Elmer G. Willyoung 335

The Heating of Armatures.—(Illustrated.) By A. H. and C. E.

Timmerman 336

Teller's Report 359

Electrical Congress Programme.— Discussion by A. E. Kennelly,

Ralph W. Pope, T. D. Lockwood and E. L. Nichols 363

Practical Aspects of Low Frequency Electrical Resonance.—(Il-

lustrated. ) By M. I. Pupin, of New York. Discussion by Nikola

Tesla 370

Report of Committee on Provisional Programme for the Congress.

Appendix IV 400

Hospitaller's Proposed System of Notation 403

Compilation of Discussions of Congress Programme 404

On the Notation Proposed by M. Hospitalier.—By Alexander Mac-

farlane 427

Comments on the Report of the Committee on Provisional Pro-

gramme.--By Johann Sahulka '. 430

Regular Meeting, September 20, 1893.

A New Method for the Control of Electrical Energy.—(Illustrated.)

By D. McF. Moore, of New York. Discussion by L. J. Zimmer-

man, Chas. Cuttriss, E. P. Thompson, T. D. Lockwood. W. J.

Hammer, P. B. Delany, C. P. Steinmetz, G. S. Dunn, A. E. Ken-

nelly and W. E. Geyer 437

The International Electrical Congress and World's Fair of 1893.

—(Inaugural Address.) By E. J. Houston. Pres't. Remarks by

T. D Lockwood. W. H. Preece, F. W. Jones, C. P. Steinmetz,

W. J. Hammer and Ralph W. Pope 464

A Brief Glance at Electricity in Medicine.—(Illustrated.) By W. J.

Morton, M. D 555

Emery on Cost of Steam and Water Power.—Discussion communi-
cated by L. B. Still well 484

Parkhurst on Galvanometers.—Communication by the Author 489

Regular Meeting, October 18, 1893.

Report of Committee on Uncompleted Work of the Congress 495

Hedgehog Transformer and Condensers.—(Illustrated.) By Fred-
erick Bedell, K. B. Miller and G. F. Wagner, of Ithaca. N. Y.
Discussion by A. E. Kennelly, M. I. Pupin and C. P. Steinmetz.. 497

Monthly Meetings of the Institute; Their Origin and Proposed
Development.—By Ralph W. Pope. Correspondence and dis-
cussion by Chas. A. Doremus and A. J. Bloor 528

Heport of Committee on Local Meetings.—Discussion by James

Hamblet, Herbert Laws Webb, Townsend Wolcott, R. W. Pope,

Geo. M. Phelps, Chas. Cuttriss, T. C. Martin, W. J. Hammer,

C. E. Emery, A. E. Kennelly, R. O. Heinrich, W. B. Vansize,

Francis B. Crocker, N. W. Perry 623

Regular Meeting, December 20, 1893.

Practicability of Electric Conduit Railways.—(Illustrated.) By

Albert Stetson. Discussion by N. W. Perrv, C. Hewitt, Joseph

Sachs, F. A. Schemer, W. T. M. Mottram' 630

Obituary.

Dr. Norvin Green 665

George B Prescott, Jr 666

Anthony Reckenzaun 667

Copper Wire Table.—(Committee on Units and Standards) 668

Catalogue of Membership 669

VII

Phelps, G. M 233, 234, 240. 242, 243, 247, 605, 606, 609, 611, 612, 613,

614, 615, 620, 622, 625
Pope, R. W 116, 172, 233, 234, 237, 240, 244, 246, 361, 364, 308, 483,

TITLES OF PAPERS, TOPICS DISCUSSED, ETC.

Abbreviations and Symbols, Electric Notation 401

Abemethy. James P., Death of 109

Action of Continuous and Alternating Currents on Fuse Metals, The

{Charles P. Matthews) 251

Age of Incandescent Lamps. The Most Economical. 65

Alternating and Continuous Currents, The Action of, on Fuse Metals. ..251

Annual Meeting (1893) 233

Armatures, Heating of 336

Aspects of Low Frequency Electrical Resonance, Practical 370

Automatic Printing Speed Counter for Dynamo Shafting, An {Geo. S.

Moler) 331

Brief Glance at Electricity in Medicine, A (W.J. Morton, M. D.) 555

Catalogue of Membership 669

Committee on Local Meetings, Report of 623

Compilation of Discussions of Congress Programme.. 404

Concrete Standards 4

Condensers, Hedgehog Transformer and 497

Conduit Railwavs, The Practicability of Electric 631

Congress and World's Fair of 1893, International Electrical 464

Congress Discussion, Electrical 363, 404, 431