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Science, New Series, Vol. 118, No. 3069, Oct. 23, 1953


Previous Issue: New Series, Vol. 118, No. 3068, Oct. 16, 1953
Next Issue: New Series, Vol. 118, No. 3070, Oct. 30, 1953


Front Matter (1 p.)
The Instrument and the Spirit, p. 3
Bentley Glass

Seventy-Five Years of Research in General Electric, pp. 451-456
C. G. Suits

Basic Instrumentation at the National Bureau of Standards, pp. 457-461
The Basis for a Science of Instrumentology, pp. 461-465
John D. Trimmer

Into a New Century, pp. 465-469
Electron Interferometry, pp. 470-474
L. Marton

Processing of Two-Dimensional Patterns by Scanning Techniques, pp. 475-477
L. S. G. Kovasznay; H. M. Joseph

Instrument Society of America Annual Conference and Exhibit, pp. 477-479
W. A. Wildhack

News and Notes, pp. 479-483


Technical Papers
The ER-55 Projector for Aerial Mapping, pp. 484-486
Russell K. Bean
A Note on the Lead Isotope Method of Age Determination, pp. 486-488
D. W. Allan; R. M. Farquhar; R. D. Russell
An Effective Safety Pipette, pp. 488-489
F. Lee Rodkey
Local Refractometry of Cell Particulars with the Cylindrical Lens Microscope, pp. 489-490
Jürgen Meyer-Arendt
A Technique for Collecting, Mounting, and Sectioning Airborne Particulate Material, pp. 490-491
R. D. Cadle; A. G. Wilder; C. F. Schadt


Comments and Communications
Development of the ER-55 Projector, pp. 492-493
K. Pestrecov
A Scintillation Counter for the Measurement of Weak β Rays, p. 493
Jean-Claude Roucayrol
A Potential Hazard in Flame Photometry, p. 494
Ferrin B. Moreland


Book Reviews
----------------, p. 494
Modern Radiochemical Practice
G. B. Cook; J. F. Duncan
Review author[s]: Richard M. Lemmon
----------------, p. 495
Chemical Process Machinery
E. Raymond Riegel
Review author[s]: Ju Chin Chu
----------------, pp. 495-496
Speech and Hearing in Communication
Harvey Fletcher
Review author[s]: John Q. Stewart
----------------, p. 496
The Science of Color
Review author[s]: A. Chapanis


Scientific Book Register, p. 496

Previous Issue: New Series, Vol. 118, No. 3068, Oct. 16, 1953
Next Issue: New Series, Vol. 118, No. 3070, Oct. 30, 1953



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