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TRANSACTIONS
OF THE
SOCIETY OF
MOTION PICTURE
ENGINEERS
CONTENTS
Officers 3
Lists of Various Committees 6
Members 8
President's Address 13
Meeting of Board of Governors 16
Report of Educational Committee 18
Report of Advertising Committee 20
Papers Committee Report , 21
Report of Committee on Electrical Devices 23
Tentative Report of Optics Committee 25
Motion Picture Nomenclature. 34
A Review of Material, Pertaining to Motion Picture Engineering.
By R. P. Burrows 39
Lighting for Motion Picture Theatres. By J. L. Stair 52
Discussion of J. L. Stair's Paper 70
Motion Picture Cameras. By Carl Louis Gregory, T. R. P. S 73
Discussion of Gregory's Paper 82
The Absorption of Light by Toned and Tinted Motion Picture
Film. By Loyd A. Jones and C. W. Gibbs 85
Discussion of Paper. By L. A. Jones 101
Condenser Lenses for Theatre Motion Picture Equipment. By Carl
E. Egeler 10-1
Discussion on Mr. Egeler's Paper 114
Address of Mr. F. W. Stratton 124
Continuous Motion Projector of the Taking of Pictures at High
Speed. By C. Francis Jenkins 126
Discussion of Mr. Jenkins' Paper 128
Color Photography. By Dr. F. E. Ives 132
Discussion of Dr. Ives' Paper 135
Building a Non-Theatrical Film Library. By L. E. Davidson.... 139
Discussion of Paper by L. E, Davidson 144
Submai-ine Photography. By J. E. Williamson and Carl L. Gregory 149 Address by Mr. Henry D. Hubbard, "The Motion Picture of
Tomorrow" 159
New Developments in Mazda Lamp Projection. By C. A. B.
Halvorson, Jr 168
Discussion of Paper by C. A. B. Halvorson, Jr 182
j^^mber 'twelve
MEETING OF MAY 9-10.11-12, 1921 WASHINGTON, D. C.