Table of contents


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News

The Significance of Vision for Scientific Progress p309

doi:10.1038/142309a0


Social and International Relations of Science p310

doi:10.1038/142310a0



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Book Reviews

Manual of Pteridology p311

doi:10.1038/142311a0


Time p313

doi:10.1038/142313a0


Die Amphibien und Reptilien Griechenlands p314

doi:10.1038/142314a0


A Text-Book on Crystal Physics p315

doi:10.1038/142315a0


Plant Form and Function p316

doi:10.1038/142316a0


Bacteriology p316

doi:10.1038/142316b0


The Chemistry of Antigens and Antibodies p316

doi:10.1038/142316c0


Mea Culpa p316

doi:10.1038/142316d0



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Articles

Polarographic Research on Cancer p317

J. HEYROVSKÝ

doi:10.1038/142317a0



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News

Excavations at Njoro, Kenya p319

doi:10.1038/142319a0



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Obituaries

Dr. A. E, H. Tutton, F.R.S p321

doi:10.1038/142321a0


Dr. C.-E. Guillaume p322

doi:10.1038/142322a0


[Obituaries] p323

doi:10.1038/142323a0



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News

Canadian Tour by Prof. C. D. Ellis, F.R.S p323

doi:10.1038/142323b0


Dr. J. E. Myers, O.B.E p323

doi:10.1038/142323c0


Robert Warington, F.R.S. (1838–1907) p323

doi:10.1038/142323d0


The Problem of Political Refugees p324

doi:10.1038/142324a0


Restoration of the Hurlers, Cornwall p324

doi:10.1038/142324b0


Roman Dorchester p324

doi:10.1038/142324c0


Prehistoric Civilization of Northern France p325

doi:10.1038/142325a0


Fungus Diseases of Animals p325

doi:10.1038/142325b0


Advances in Printing Telegraph Technique p325

doi:10.1038/142325c0


History of Maize-Breeding p325

doi:10.1038/142325d0


Mexican Pictographic Manuscript p326

doi:10.1038/142326a0


Very Low Temperatures p326

doi:10.1038/142326b0


Crocodilian Energy p326

doi:10.1038/142326c0


Recent Minor Earthquakes p326

doi:10.1038/142326d0



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Research Article

Part I Vision in Nature and Vision Aided by Science Part II Science and Warfare p327

null RAYLEIGH

doi:10.1038/142327a0



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News

Summaries of Addresses of Presidents of Sections p339

doi:10.1038/142339a0


Recent Investigations in the Chemistry of Gold p339

doi:10.1038/142339b0


Development and Evolution p340

doi:10.1038/142340a0


Fluctuations in the Abundance of Marine Animals p341

doi:10.1038/142341a0


Correlations and Culture: A Study in Technique p342

doi:10.1038/142342a0


Scope and Method of Economics p343

doi:10.1038/142343a0


Changing Outlook of Engineering Science p344

doi:10.1038/142344a0


The Orient and Europe p345

doi:10.1038/142345a0


Eye and Brain, as Factors in Visual Perception p346

doi:10.1038/142346a0


Physiology of the Plant Cell p347

doi:10.1038/142347a0


Administration of Public Education p347

doi:10.1038/142347b0


A Long-Term Agricultural Policy p348

doi:10.1038/142348a0


National Parks and the Preservation of the Flora and Fauna of Great Britain p349

doi:10.1038/142349a0


Scientific Survey of the Cambridge District p351

doi:10.1038/142351a0


The Darwin Library at Down House p351

doi:10.1038/142351b0


German Trans-Atlantic Flight p351

doi:10.1038/142351c0


International Geological Congress p351

doi:10.1038/142351d0


Agricultural Research Scholarships and Awards p351

doi:10.1038/142351e0


Announcements p352

doi:10.1038/142352a0



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Letters to Editor

Reflection of Atmospherics by the Ionosphere p353

T. H. LABY,  F. G. NlCHOLLS,  A. F. B. NICKSON & J. J. MCNEILL

doi:10.1038/142353a0


Time and Probability p354

H. S. ALLEN

doi:10.1038/142354a0


Cosmological and Atomic Constants p354

D. S. KOTHARI

doi:10.1038/142354b0


Interference: Patterns with Liesegang Rings p355

C. V. RAMAN & K. SUBBARAMIAH

doi:10.1038/142355a0


Some New Anthocyanin Types p356

J. R. PRICE,  VIOLET C. STURGESS,  R. ROBINSON & GERTRUDE M. ROBINSON

doi:10.1038/142356a0


By-products in Aromatic Nitration p356

G. M. BENNETT & P. V. YOULE

doi:10.1038/142356b0


Quantitative Measurement of Vitamin B1 and its Phosphoric Esters and their Synthesis in Animal Tissues p356

S. OCHOA & R. A. PETERS

doi:10.1038/142356c0


Season and Rate of Conception p357

JOSEPH EDWARDS

doi:10.1038/142357a0


Development of the Inert Regions of the Salivary Gland Chromosomes of Drosophila p357

S. FROLOVA

doi:10.1038/142357b0


Chromosome Numbers in Cimex p358

H. D. SLACK

doi:10.1038/142358a0


Time Sequence of Crossing-Over p358

F. W. SANSOME

doi:10.1038/142358b0


‘Bridlington Crag’ Shells p359

T. SHEPPARD

doi:10.1038/142359a0


Sky Darkening Associated with a Severe Thunderstorm p359

D. R. BARBER

doi:10.1038/142359b0


Dillenian Correspondence p359

J. RAMSBOTTOM

doi:10.1038/142359c0



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News

Points from Foregoing Letters p360

doi:10.1038/142360a0


Research Items p361

doi:10.1038/142361a0


The International Congress of Anthropological and Ethnological Sciences p363

doi:10.1038/142363a0


The International Astronomical Union p364

doi:10.1038/142364a0



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Articles

Humidity in the British Isles p365

doi:10.1038/142365a0



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News

Reclamation of Tidal Lands p366

doi:10.1038/142366a0


Science News a Century Ago p366

doi:10.1038/142366b0


Societies and Academies p367

doi:10.1038/142367a0



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Miscellany

Forthcoming Events p368

doi:10.1038/142368a0


Appointments Vacant p368

doi:10.1038/142368b0


Reports and other Publications p368

doi:10.1038/142368c0



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