| | Opinion |  |
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| | More Plain Speaking 545
doi:10.1038/214545a0
PDF (235K)
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| | Manganese for Peace? 546
doi:10.1038/214546a0
PDF (121K)
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| | News and Views |  |
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| | Agreement at Last 547
doi:10.1038/214547a0
PDF (125K)
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| | Booming Industry 547
doi:10.1038/214547b0
PDF (125K)
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| | Nuclear Mismanagement 547
doi:10.1038/214547c0
PDF (252K)
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| | Britain in Space 548
doi:10.1038/214548a0
PDF (130K)
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| | World Health 548
doi:10.1038/214548b0
PDF (255K)
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| | Common Cause 549
doi:10.1038/214549a0
PDF (128K)
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| | Education 1965 549
doi:10.1038/214549b0
PDF (128K)
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| | Research Run Riot 549
doi:10.1038/214549c0
PDF (128K)
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| | Plants, Animals and Man 549
doi:10.1038/214549d0
PDF (253K)
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| | Non-bird 550
doi:10.1038/214550a0
PDF (129K)
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| | Penicillin Action 550
A Correspondent in Microbiology
doi:10.1038/214550b0
PDF (257K)
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| | Time Lapse by Satellite 551
doi:10.1038/214551a0
PDF (134K)
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| | Antibiotics and Ribosomes 551
A Correspondent in Molecular Biology
doi:10.1038/214551b0
PDF (262K)
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| | Origin of Mitochondria and Chloroplasts 552
A Correspondent in Cell Biology
doi:10.1038/214552a0
PDF (134K)
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| | Parliament in Britain 553
doi:10.1038/214553a0
PDF (117K)
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| | Articles |  |
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| | Sex Differentiation in Mammals 554
URSULA MITTWOCH
doi:10.1038/214554a0
Abstract & References | PDF (523K)
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| | Eutrophication 557
J. W. LUND
doi:10.1038/214557a0
PDF (245K)
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| | Strength Development in Calcarious Cements 559
S. CHATTERJI & J. W. JEFFERY
doi:10.1038/214559a0
Abstract & References | PDF (723K)
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| | Ferredoxin and Photosynthetic Phosphorylation 562
DANIEL I. ARNON, HARRY Y. TSUJIMOTO & BERAH D. MCSWAIN
doi:10.1038/214562a0
Abstract & References | PDF (511K)
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| | Photochemistry of Iodopsin 566
TORU YOSHIZAWA & GEORGE WALD
doi:10.1038/214566a0
Abstract & References | PDF (926K)
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| | Vision in Octopus and Squid: Rhodopsin and Retinochrome in the Octopus Retina 572
TOMIYUKI HARA, REIKO HARA & JITSUZO TAKEUCHI
doi:10.1038/214572a0
Abstract & References | PDF (225K)
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| | Vision in Octopus and Squid: Rhodopsin and Retinochrome in the Squid Retina 573
TOMIYUKI HARA & REIKO HARA
doi:10.1038/214573a0
References | PDF (306K)
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| | Sexing of Live Rabbit Blastocysts 576
R. G. EDWARDS & R. L. GARDNER
doi:10.1038/214576a0
Abstract & References | PDF (270K)
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| | The Vertebrate Epidermal Chalone 578
W. S. BULLOUGH, E. B. LAURENCE, O. H. IVERSEN & K. ELGJO
doi:10.1038/214578a0
Abstract & References | PDF (351K)
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| | Lymphocytes in Congenital Absence of the Thymus 580
HAROLD W. LISCHNER, HOPE H. PUNNETT & ANGELO M. DiGEORGE
doi:10.1038/214580a0
Abstract & References | PDF (364K)
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| | Continuous Synchronous Culture of Photosynthetic Micro-organisms 582
JOHN A. HOWELL, H. M. TSUCHIYA & A. G. FREDRICKSON
doi:10.1038/214582a0
Abstract & References | PDF (310K)
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| | Letters | |
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| | Electrical Effects of the Harmattan Dust Storms 585
D. J. HARRIS
doi:10.1038/214585a0
PDF (115K)
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| | Flow Characteristics of Complex Soap Systems 585
A. WHITE
doi:10.1038/214585b0
First paragraph & References | PDF (171K)
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| | Stability of Grain Boundary Cavities in Copper 586
A. GITTINS
doi:10.1038/214586a0
First paragraph & References | PDF (171K)
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| | Lonsdaleite, a Hexagonal Polymorph of Diamond 587
CLIFFORD FRONDEL & URSULA B. MARVIN
doi:10.1038/214587a0
First paragraph & References | PDF (393K)
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| | Vibrational Deactivation of Excited States of Nitrogen created in a Microwave Discharge 589
R. E. W. JANSSON, L. A. MIDDLETON & J. LEWIS
doi:10.1038/214589a0
First paragraph & References | PDF (121K)
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| | Effect of some Metabolic Inhibitors on Plaque Formation in Jerne Plates 590
M. C. BERENBAUM
doi:10.1038/214590a0
First paragraph & References | PDF (213K)
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| | Antigenic Identity of Interferons induced by Different Viruses in the same Cell System 591
B. FAUCONNIER
doi:10.1038/214591a0
First paragraph & References | PDF (245K)
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| | Passage of Antigens across the Vascular Barrier of the Thymus 592
KAUKO KOUVALAINEN & DAVID GITLIN
doi:10.1038/214592a0
First paragraph & References | PDF (254K)
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| | Secretion and Immunogenicity of Dwarf Tapeworm Esterases 593
ROBERT M. COLEMAN, FRANCIS X. VENUTA & WALTER J. FIMIAN JUN.
doi:10.1038/214593a0
First paragraph & References | PDF (355K)
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| | Acetylcholinesterase Activity in the Optic Lobes of Chicks at Hatching 594
ANTONIA VERNADAKIS & ALAN BURKHALTER
doi:10.1038/214594a0
First paragraph & References | PDF (351K)
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| | Response of Isolated Bullfrog Gastric Mucosa to a Gastrin-like Pentapeptide 595
WARREN D. DAVIDSON, CARLOS A. E. LEMMI & JAMES C. THOMPSON
doi:10.1038/214595a0
First paragraph & References | PDF (225K)
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| | Differentiation of Receptor Systems activated by Sympathomimetic Amines 597
A. M. LANDS, A. ARNOLD, J. P. MCAULIFF, F. P. LUDUENA & T. G. BROWN JUN.
doi:10.1038/214597a0
First paragraph & References | PDF (213K)
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| | Breakdown of Blood–Cerebrospinal Fluid Barrier for Calcium Ions in the Absence of Glucocorticoids 598
TOKURO FUKUDA & JUNICHIRO UI
doi:10.1038/214598a0
First paragraph & References | PDF (237K)
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| | Effect of Ultra-violet Radiation on Skin Collagen of Intact Living Mice 599
SAM SHUSTER & EVA BOTTOMS
doi:10.1038/214599a0
First paragraph & References | PDF (226K)
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| | Karyotype of the Monotremes Ornithorhynchus anatinus (Platypus) and Tachyglossus aculeatus (Echidna) 600
Y. A. E. BICK & W. D. JACKSON
doi:10.1038/214600a0
First paragraph & References | PDF (245K)
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| | Chorion and Vitelline Membranes and their Role in Resorbing Eggs of the Hymenoptera 601
J. G. RICHARDS & P. E. KING
doi:10.1038/214601a0
First paragraph & References | PDF (224K)
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| | Labelling of Aphid Saliva with Rubidium-86 602
K. P. LAMB, P. EHRHARDT & V. MOERICKE
doi:10.1038/214602a0
First paragraph & References | PDF (215K)
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| | Transfer of Biologically Fixed Nitrogen in a Sand Dune Slack Region 603
W. D. P. STEWART
doi:10.1038/214603a0
First paragraph & References | PDF (238K)
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| | Bromide, a Substitute for Chloride in a Marine Algal Medium 604
J. MCLACHLAN & J. S. CRAIGIE
doi:10.1038/214604a0
First paragraph & References | PDF (231K)
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| | Effect of Camphor Vapour and Temperature on the Frequency of Aberrant Asci in Sordaria
605
W. J. WHITTINGTON & C. M. PENN
doi:10.1038/214605a0
First paragraph & References | PDF (233K)
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| | Adenovirus Infection of Human Embryo Liver Cells 606
A. J. ZUCKERMAN, J. ALWEN & F. FULTON
doi:10.1038/214606a0
First paragraph & References | PDF (858K)
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| | Bacteriocinogeny in Lactobacillus fermenti
609
H. C. DE KLERK
doi:10.1038/214609a0
First paragraph & References | PDF (171K)
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| | Complete Development of the Human Hookworm, Necator americanus, in Golden Hamsters, Mesocricetus auratus
609
H. G. SEN & D. SETH
doi:10.1038/214609b0
First paragraph & References | PDF (344K)
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| | Experimental Neurolathyrism in Monkeys 610
S. L. N. RAO, P. S. SARMA, K. S. MANI, T. R. RAGHUNATHA RAO & S. SRIRAMACHARI
doi:10.1038/214610a0
First paragraph & References | PDF (293K)
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| |
N-Methyl-N-Nitrosourea as a Strong Topical Carcinogen when painted on Skin of Rodents 611
A. GRAFFI, F. HOFFMANN & M. SCHÜTT
doi:10.1038/214611a0
First paragraph & References | PDF (119K)
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| | Mutagenic Effect of Irradiated DNA in Drosophila melanogaster
611
OM PARKASH
doi:10.1038/214611b0
First paragraph & References | PDF (244K)
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| | Mitotic Nondisjunction in Cultivated Human Cells 612
G. M. MARTIN, C. SPRAGUE & J. S. BRYANT
doi:10.1038/214612a0
First paragraph & References | PDF (272K)
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| | Chromosome Redundancy and Gene Expression: an Explanation for Trisomy Abnormalities 613
K. LEMONE YIELDING
doi:10.1038/214613a0
First paragraph & References | PDF (281K)
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| | Cytochemical Study of Interstitial Cells in the Bat Ovary 614
SARDUL S. GURAYA
doi:10.1038/214614a0
First paragraph & References | PDF (768K)
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| | Electron Transport Carriers in Plant Mitochondria 616
WALTER D. BONNER JUN. & MARIJANA PLESNICAR
doi:10.1038/214616a0
First paragraph & References | PDF (241K)
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| | Resolution of 5-Nucleotidase of Sheep Brain from Non-specific Phosphatase and its Inhibition by Nucleoside-triphosphates 618
P. L. IPATA
doi:10.1038/214618a0
First paragraph & References | PDF (125K)
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| | Androgenic Control of a Sex-dependent Protein in the Rat 618
ARUN K. ROY & OTTO W. NEUHAUS
doi:10.1038/214618b0
First paragraph & References | PDF (512K)
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| | Release of Lipoprotein Lipase from the Perfused Liver of the Rat 620
J. M. FELTS & P. A. MAYES
doi:10.1038/214620a0
First paragraph & References | PDF (245K)
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| | Organic Phosphorus Content of the Alpha Chains of Chicken Bone Collagen 621
C. J. FRANCOIS, M. J. GLIMCHER & S. M. KRANE
doi:10.1038/214621a0
First paragraph & References | PDF (257K)
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| | Macromolecular Synthesis in Cells infected with Reovirus Type 2 and the Effect of Ara-C 622
PHILIP C. LOH & MARJORIE SOERGEL
doi:10.1038/214622a0
First paragraph & References | PDF (246K)
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| | Hydrolysis of Secondary Alcohol Sulphate by a Bacterial Enzyme 623
W. J. PAYNE, JOY P. WILLIAMS & W. R. MAYBERRY
doi:10.1038/214623a0
First paragraph & References | PDF (240K)
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| | Use of a Detergent–Acid Mixture to rupture Tissue Culture Cells 624
CELIA FILDES & P. D'ARCY HART
doi:10.1038/214624a0
First paragraph & References | PDF (377K)
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| | Catecholamines in Brown Fat 625
CLAES WIRSÉN & BERTIL HAMBERGER
doi:10.1038/214625a0
First paragraph & References | PDF (368K)
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| | Fibrinolytic Activity of some Biarylcarboxylic Acids 626
R. J. GRYGLEWSKI & M. ECKSTEIN
doi:10.1038/214626a0
First paragraph & References | PDF (106K)
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| | Isolation of Organic Solutes from Sea Water by Co-precipitation 627
G. CHAPMAN & A. C. RAE
doi:10.1038/214627a0
First paragraph & References | PDF (333K)
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| | Nickel, Iron, and Manganese in the Metabolism of the Oat Plant 628
PHILIP C. WILLIAMS
doi:10.1038/214628a0
First paragraph & References | PDF (188K)
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| | Haptic Illusions and Inappropriate Constancy Scaling 629
RAY OVER
doi:10.1038/214629a0
First paragraph & References | PDF (138K)
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| | Control of a Response after Chronic Reduction of Cholinesterase 629
PETER H. GLOW & ALAN J. RICHARDSON
doi:10.1038/214629b0
First paragraph & References | PDF (251K)
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| | Relationship between Partition Data and the Adsorption of some Herbicides by Soils 630
R. J. HANCE
doi:10.1038/214630a0
First paragraph & References | PDF (218K)
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| | Green Humic Acid and its Possible Origin as a Fungal Metabolite 631
K. KUMADA & H. M. HURST
doi:10.1038/214631a0
First paragraph & References | PDF (297K)
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| | Fluid Film Interferometry in Lubrication Studies 633
F. J. WESTLAKE & A. CAMERON
doi:10.1038/214633a0
First paragraph & References | PDF (447K)
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| | Megayear and Gigayear: Two Units of Geological Time 634
KALERVO RANKAMA
doi:10.1038/214634a0
First paragraph & References | PDF (347K)
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| | Book Reviews |  |
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| | Talking about Time 635
MARSHA A. ROCKEY reviews Interdisciplinary Perspective of Time
Vol. 138; Article 2. Edited by
Roland Fischer
doi:10.1038/214635a0
PDF (130K)
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| | Animal Activities 635
W. H. THORPE reviews Play, Exploration and Territory in Mammals
Edited by
P. A. Jewell & Caroline Loizos
doi:10.1038/214635b0
PDF (269K)
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| | Animal Populations 636
H. B. D. KETTLEWELL reviews Ecological Methods with Particular Reference to the Study of Insect Populations
By
T. R. E. Southwood
doi:10.1038/214636a0
PDF (142K)
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| | Journals Proliferate 636
F. KINGSLEY SANDERS reviews
The Journal of General Virology
Vol. 1, Part 1 (January 1967). Edited by
Colin Kaplan & Peter Wildy
doi:10.1038/214636b0
PDF (142K)
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| | Learning and Retardation 637
K. S. HOLT reviews International Review of Research in Mental Retardation, Vol. 2
Edited by
Norman R. Ellis
doi:10.1038/214637a0
PDF (131K)
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| | Cancer Research 637
P. C. KOLLER reviews The Thymus
Its Role in Immune Responses, Leukaemia Development and Carcinogenesis. By
Donald Metcalf and Immunological Aspects of Viral Oncolysis
By
Jean Lindenmann & Paul A. Klein and New Trends in the Treatment of Cancer
Edited by
L. Manuila, S. Moles & P. Rentchnick
doi:10.1038/214637b0
PDF (131K)
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| | Fish of Clay 637
L. B. HALSTEAD TARLO reviews Faune Ichthyologique du London Clay
By
Edgard Casier
doi:10.1038/214637c0
PDF (265K)
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| | Irradiated Rabbits 638
G. E. HARRISON reviews The Toxicology of Radioactive Substances
Vol. 3: Iron-59. Edited by
A. A. Letavet & E. B. Kurlyandskaya
doi:10.1038/214638a0
PDF (137K)
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| | Scanning Literature 638
P. J. B. CLARRICOATS reviews Microwave Scanning Antennas
Edited by
R. C. Hansen
doi:10.1038/214638b0
PDF (277K)
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| | Uses for Powder 639
B. L. DANIELL reviews Modern Developments in Powder Metallurgy
Edited by
Henry H. Hausner
doi:10.1038/214639a0
PDF (143K)
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| | [Book Reviews] 640
doi:10.1038/214640a0
PDF (129K)
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| | Errata | |
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| | Erratum 640
doi:10.1038/214640b0
PDF (129K)
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| | Erratum 640
doi:10.1038/214640c0
PDF (129K)
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| | Forthcoming Events | |
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| | Forthcoming Events 641
doi:10.1038/214641a0
PDF (164K)
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| | Appointments Vacant | |
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| | Appointments Vacant 641
doi:10.1038/214641b0
PDF (331K)
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| | Reports and other Publications | |
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| | Reports and other Publications 642
doi:10.1038/214642a0
PDF (171K)
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