| | Opinion |  |
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| | Off to Join the Shuttle ? 425
doi:10.1038/227425a0
PDF (116K)
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| | Mansfield in the Dock 426
doi:10.1038/227426a0
PDF (114K)
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| | Quick Change 426
doi:10.1038/227426b0
PDF (348K)
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| | 100 Years Ago 427
doi:10.1038/227427a0
PDF (198K)
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| | Old World | |
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| | European Conference: Way Out of the Space Dilemma 427
A Correspondent
doi:10.1038/227427b0
PDF (280K)
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| | Engineering: Dropped Courses at Aberdeen 428
Our Education Correspondent
doi:10.1038/227428a0
PDF (133K)
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| | Public Health: Fluoridation without Fear 428
doi:10.1038/227428b0
PDF (282K)
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| | Museums: More Space for Dinosaurs 429
Our Planning Correspondent
doi:10.1038/227429a0
PDF (148K)
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| | University Salaries: Following the Doctors 429
doi:10.1038/227429b0
PDF (280K)
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| | Sewage Disposal: Waste Control 430
doi:10.1038/227430a0
PDF (131K)
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| | Demography: Growth in the East 430
Our Soviet Correspondent
doi:10.1038/227430b0
PDF (254K)
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| | English Channel: A New Underground Movement 431
doi:10.1038/227431a0
PDF (122K)
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| | Parliament in Britain 431
doi:10.1038/227431b0
PDF (122K)
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| | The MRCA Tonic 432
doi:10.1038/227432a0
PDF (132K)
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| | New World | |
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| | Limbering Up for an Olympian Defeat 433
Our Washington Correspondent
doi:10.1038/227433a0
PDF (228K)
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| | NASA: Two Planet Payload 434
doi:10.1038/227434a0
PDF (124K)
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| | Mr Daddario' Swansong 435
Our Washington Correspondent
doi:10.1038/227435a0
PDF (135K)
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| | Food Safety: Some Sweetness Left 436
Our Washington Correspondent
doi:10.1038/227436a0
PDF (132K)
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| | Uranium: Devious Road to Enrichment 436
Our Washington Staff
doi:10.1038/227436b0
PDF (271K)
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| | The Future: A Lot of Knowledge is Dangerous 437
Our Washington Correspondent
doi:10.1038/227437a0
PDF (138K)
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| | News and Views |  |
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| | Seeing is Believing 438
doi:10.1038/227438a0
PDF (115K)
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| | Animal Behaviour: Man and Animals not Identical 438
A Correspondent
doi:10.1038/227438b0
PDF (251K)
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| | Protein Synthesis: Exposing Start Signals 439
Our Cell Biology Correspondent
doi:10.1038/227439a0
PDF (133K)
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| | X-Ray Analysis: Coenzyme Conformations 439
Our Molecular Biology Correspondent
doi:10.1038/227439b0
PDF (284K)
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| | Entomology: Mozambique Scarabs 440
doi:10.1038/227440a0
PDF (285K)
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| | Contraception: Pills and Thrombosis 440
doi:10.1038/227440b0
PDF (276K)
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| | Ribosomal RNA: Maturation in a Missing Link 441
Our Cell Biology Correspondent
doi:10.1038/227441a0
PDF (131K)
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| | Fisheries: How to Get Recruits 441
A Correspondent
doi:10.1038/227441b0
PDF (265K)
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| | External Galaxies: Seyferts without Dense Cores 442
Our Cosmology Correspondent
doi:10.1038/227442a0
PDF (133K)
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| | Horticulture: Raspberries Getting Better 442
Our Botany Correspondent
doi:10.1038/227442b0
PDF (270K)
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| | Electronics: Multiplying in Real Time 443
doi:10.1038/227443a0
PDF (136K)
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| | Dense Stars: Magnetic Flux of White Dwarfs 443
Our Cosmology Correspondent
doi:10.1038/227443b0
PDF (269K)
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| | Quasars: Beyond the Lyman Limit 444
Our Observatories Correspondent
doi:10.1038/227444a0
PDF (133K)
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| | Seismology: Earthquakes and Temperature 444
Our Geomagnetism Correspondent
doi:10.1038/227444b0
PDF (133K)
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| | Articles |  |
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| | New Dust Standards for British Coal Mines 445
M. JACOBSEN, S. RAE, W. H. WALTON & J. M. ROGAN
doi:10.1038/227445a0
Abstract & References | PDF (339K)
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| | Isolation and Partial Characterization of the Transfer Ribonucleic Acid Cistrons from Escherichia coli
448
DON J. BRENNER, MAURILLE J. FOURNIER & B. P. DOCTOR
doi:10.1038/227448a0
Abstract & References | PDF (578K)
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| | Mechanism of Chromosome Pairing during Meiosis 451
DAVID E. COMINGS & TADASHI A. OKADA
doi:10.1038/227451a0
Abstract & References | PDF (902K)
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| | DNA Replication in Antigen Stimulated Guinea-pig Lymph Node Cells 456
CLAUDE SOULEIL & JACQUES PANIJEL
doi:10.1038/227456a0
Abstract & References | PDF (576K)
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| | Action of DFP on the Leucocyte and the Axon 460
A. M. WOODIN & ANTONETTE A. WIENEKE
doi:10.1038/227460a0
Abstract & References | PDF (416K)
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| | Division of Chloroplasts in an Artificial Environment 463
STUART M. RIDLEY & RACHEL M. LEECH
doi:10.1038/227463a0
Abstract & References | PDF (404K)
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| | Pulsar Radiation Mechanisms 465
P. A. STURROCK
doi:10.1038/227465a0
Abstract & References | PDF (612K)
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| | Search for Hard X-ray Emission from the Galactic Plane 470
J. A. M. BLEEKER & A. J. M. DEERENBERG
doi:10.1038/227470a0
Abstract & References | PDF (431K)
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| | Radio Waves from Grains in HII Regions 473
F. HOYLE & N. C. WICKRAMASINGHE
doi:10.1038/227473a0
Abstract & References | PDF (224K)
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| | Letters | |
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| | Physical Sciences: Distribution of Antimatter in the Universe 475
JANET JONES & BERNARD JONES
doi:10.1038/227475a0
First paragraph & References | PDF (213K)
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| | Pulsar AP 2015: 21 cm Line Absorption Profile 476
P. ENCRENAZ & M. GUÉLIN
doi:10.1038/227476a0
First paragraph & References | PDF (203K)
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| | Displacement of the Clouds of Venus 477
JUKKA NIKANDER & CH. BOYER
doi:10.1038/227477a0
First paragraph & References | PDF (105K)
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| | Rare Earth and Other Elemental Abundances in the Allende Meteorite 478
HIROSHI WAKITA & ROMAN A. SCHMITT
doi:10.1038/227478a0
First paragraph & References | PDF (287K)
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| | Horizontal Travelling Waves during the Onset of Magnetic Storms 479
MICHAEL ANASTASSIADES, GEORGE MORAITIS & ALEXANDER ANASTASSIADES
doi:10.1038/227479a0
First paragraph & References | PDF (241K)
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| | Radiocarbon Dates related to the Scottish Late-Glacial Sea in the Firth of Clyde 480
W. W. BISHOP & J. H. DICKSON
doi:10.1038/227480a0
First paragraph & References | PDF (309K)
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| | Climatic Oscillations 1200−2000 AD 482
S. J. JOHNSEN, W. DANSGAARD, H. B. CLAUSEN & C. C. LANGWAY
doi:10.1038/227482a0
First paragraph & References | PDF (218K)
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| | New Non-noble Metal Anode Catalysts for Acid Fuel Cells 483
HARALD BÖHM
doi:10.1038/227483a0
First paragraph & References | PDF (223K)
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| | Observation of Energy Loss Processes Usually Masked by Plural Scattering of Fast Electrons 484
R. A. CHICK & D. L. MISELL
doi:10.1038/227484a0
First paragraph & References | PDF (200K)
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| | Interface Hysteresis and Negative Differential Conductance at Liquid−Liquid Junction between Non-miscible Ionic Solutions 485
J. GUASTALLA
doi:10.1038/227485a0
First paragraph & References | PDF (166K)
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| | Heat Transfer Characteristics of Dilute Polymer Solutions in Fully Rough Pipe Flow 486
A. WHITE
doi:10.1038/227486a0
First paragraph & References | PDF (215K)
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| | Study of Radiation Damage in Silicon with the Scanning Electron Microscope 487
S. M. DAVIDSON
doi:10.1038/227487a0
First paragraph & References | PDF (277K)
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| | Autoradiography in the Scanning Electron Microscope 488
D. PAUL, A. GRÖBE & F. ZIMMER
doi:10.1038/227488a0
First paragraph & References | PDF (439K)
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| | Structure in Embedding Media for Electron Microscopy 489
H. H. M. BALYUZI & R. E. BURGE
doi:10.1038/227489a0
First paragraph & References | PDF (424K)
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| | Rhythmic Crystallization of Poly-L-alanine 490
H. BRUMBERGEB
doi:10.1038/227490a0
First paragraph & References | PDF (230K)
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| | Piezoelectric Properties of Dry and Wet Bone 491
J. C. ANDERSON & C. ERIKSSON
doi:10.1038/227491a0
First paragraph & References | PDF (241K)
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| | Template Catalysis: Asymmetric Polymerization of Amino-acids on Clay Minerals 492
EGON T. DEGENS, JOHANN MATHEJA & TOGWELL A. JACKSON
doi:10.1038/227492a0
First paragraph & References | PDF (230K)
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| | Biological Sciences: Transmitter Release by Presynaptic Impulses in the Squid Stellate Ganglion 493
HENRY A. LESTER
doi:10.1038/227493a0
First paragraph & References | PDF (395K)
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| | Incomplete Dosage Compensation for Glucose-6-phosphate Dehydrogenase in Human Embryos and Newborns 496
MARK W. STEELE
doi:10.1038/227496a0
First paragraph & References | PDF (403K)
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| | Non-random Chromosome Losses in Down's Syndrome 499
J. GALL jun., S. M. GARN, MARY HARPER & C. W. STIMSON
doi:10.1038/227499a0
First paragraph & References | PDF (240K)
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| | Inactivation of Alkaline Phosphatase by O2
1  g
500
B. STEVENS, D. G. DELGADO & J. G. CORY
doi:10.1038/227500a0
First paragraph & References | PDF (264K)
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| | Uranium Content of Normal Blood 501
E. I. HAMILTON
doi:10.1038/227501a0
First paragraph & References | PDF (262K)
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| | Effect of Contraceptive Pills on the Distribution of Sexual Activity in the Menstrual Cycle 502
J. RICHARD UDRY & NAOMI M. MORRIS
doi:10.1038/227502a0
First paragraph & References | PDF (253K)
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| | Extrauterine Growth of Mouse Egg-cylinders results in Malignant Teratoma 503
DAVOR SOLTER, NIKOLA  KREB & IVAN DAMJANOV
doi:10.1038/227503a0
First paragraph & References | PDF (271K)
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| | Antiviral Activity of Double Stranded RNA and Virus-like Particles from Penicillium stoloniferum
504
D. N. PLANTEROSE, P. J. BIRCH, D. J. F. PILCH & T. J. SHARPE
doi:10.1038/227504a0
First paragraph & References | PDF (251K)
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| | Antiviral Activity of Double Stranded RNA from a Virus isolated from Aspergillus foetidus
505
G. T. BANKS, K. W. BUCK, E. B. CHAIN, JOAN E. DARBYSHIRE, F. HIMMELWEIT, G. RATTI, T. J. SHARPE & D. N. PLANTEROSE
doi:10.1038/227505a0
First paragraph & References | PDF (396K)
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| | Production and Specificity of a Blastogenic Factor in Mixed Leucocyte Cultures from Twin Sisters 507
SHINPEI KASAKURA
doi:10.1038/227507a0
First paragraph & References | PDF (238K)
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| | Soluble Blood Group I Substance in Human Amniotic Fluid 508
AMIEL G. COOPER
doi:10.1038/227508a0
First paragraph & References | PDF (247K)
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| | Antibody and Complement-like Factors in the Cytotoxic Action of Immune Lymphocytes 509
C. K. GRANT, SYLVIA DENHAM, J. G. HALL & P. ALEXANDER
doi:10.1038/227509a0
First paragraph & References | PDF (251K)
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| | Localization of Afferent Lymph Cells within the Draining Node during a Primary Immune Response 510
R. H. KELLY
doi:10.1038/227510a0
First paragraph & References | PDF (493K)
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| | Effect of Collagen and Acid Polysaccharides on the Growth of BHK/21 Cells in Semi-solid Media 513
F. K. SANDERS & JANET D. SMITH
doi:10.1038/227513a0
First paragraph & References | PDF (410K)
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| | Competence Mutants: Isolation of Transformation Deficient Strains of Haemophilus influenzae
515
JOHN H. CASTER, EDITH HORN POSTEL & SOL H. GOODGAL
doi:10.1038/227515a0
First paragraph & References | PDF (467K)
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| | Cell Septation during Synchronous Growth of Bacillus subtilis
517
R. J. L. PAULTON
doi:10.1038/227517a0
First paragraph & References | PDF (230K)
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| | Fragmentation of Binocular Fusion in Stroboscopic Illumination 518
D. M. MACKAY
doi:10.1038/227518a0
First paragraph & References | PDF (118K)
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| | Mutants of the Visual Pathway of Drosophila melanogaster
518
WILLIAM L. PAK, JOSEPH GROSSFIELD & KAY S. ARNOLD
doi:10.1038/227518b0
First paragraph & References | PDF (343K)
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| | Selection and Covariance 520
GEORGE R. PRICE
doi:10.1038/227520a0
PDF (255K)
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| | Toxicity of Mould-damaged Sweet Potatoes (Ipomoea batatas) 521
BENJAMIN J. WILSON, DOMINIC T. C. YANG & MICHAEL R. BOYD
doi:10.1038/227521a0
First paragraph & References | PDF (278K)
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| | Evidence for Biogenic Synthesis of an Unusual Ferric Oxide Mineral during Alteration of Basalt by a Tropical Lichen 522
TOGWELL A. JACKSON & W. D. KELLER
doi:10.1038/227522a0
First paragraph & References | PDF (275K)
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| | Evolutionary and Systematic Significance of Crocodilian Nesting Habits 523
ALLEN E. GREER
doi:10.1038/227523a0
First paragraph & References | PDF (247K)
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| | Book Reviews |  |
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| | An Earth 525
S. K. RUNCORN reviews The Earth
Its Origin, History and Physical Constitution. By
Harold Jeffreys
doi:10.1038/227525a0
PDF (132K)
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| | "Skyie-Influences" 525
N. W. PIRIE reviews Planets and Life
By
P. H. A. Sneath
doi:10.1038/227525b0
PDF (281K)
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| | Times Past 526
JOHN CHALLINOR reviews Toward a History of Geology
Edited by
Cecil J. Schneer
doi:10.1038/227526a0
PDF (149K)
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| | Pre-Cambrian Rock 527
DAVID BRIDGWATER reviews Origin of Anorthosite and Related Rocks
Edited by
Y. W. Isachsen
doi:10.1038/227527a0
PDF (141K)
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| | Figuring the Earth 527
P. J. CARMODY reviews Introduction to Geodesy
By
Clair E. Ewing & Michael M. Mitchell
doi:10.1038/227527b0
PDF (141K)
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| | Space Physics 527
DAVID W. HUGHES reviews Space Physics
By
R. Stephen White
doi:10.1038/227527c0
PDF (278K)
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| | Mathematics of Space 528
J. R. RAVETZ reviews Space Through the Ages
The Evolution of Geometrical Ideas from Pythagoras to Hilbert and Einstein. By
Cornelius Lanczos
doi:10.1038/227528a0
PDF (137K)
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| | Thanks to Orowan 528
R. W. CAHN reviews Physics of Strength and Plasticity
Edited by
Ali S. Argon
doi:10.1038/227528b0
PDF (137K)
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| | Functional Analysis 528
D. A. EDWARDS reviews Linear Functional Analysis
Introduction to Lebesgue Integration and Infinite Three-Dimensional Problems. By
Bernard Epstein and Elements of Functional Analysis
By
I. J. Maddox
doi:10.1038/227528c0
PDF (275K)
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| | Crystal Structures 529
C. H. MCKIE reviews Introduction to Crystallography
By
Donald E. Sands
doi:10.1038/227529a0
PDF (138K)
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| | Chemical Encyclopaedia 529
T. S. WEST reviews Analytical Chemistry of Beryllium
By
A. V. Novoselova & L. R. Batsanova and Analytical Chemistry of Zirconium and Hafnium
By
S. V. Elinson & K. I. Petrov and Analytical Chemistry of Ruthenium
By
T. D. Avtokratova and Analytical Chemistry of Thallium
By
I. M. Korenman and Analytical Chemistry of Cobalt
By
I. V. Pyatnitskii
doi:10.1038/227529b0
PDF (437K)
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| | Carboxylic Acid Chemistry 531
D. BIGLEY reviews COOH(R): The Chemistry of Carboxylic Acids and Esters
(The Chemistry of Functional Groups.) Edited by
Saul Patai
doi:10.1038/227531a0
PDF (145K)
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| | Protein Structure 531
S. SHALL reviews The Structure and Action of Proteins
By
Richard E. Dickerson & Irving Geis
doi:10.1038/227531b0
PDF (284K)
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| | Plant Growth For Schools 532
M. A. HALL reviews Plant Growth
By
M. Black & J. Edelman
doi:10.1038/227532a0
PDF (139K)
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| | Soil Biology 532
AMYAN MACFADYEN reviews Ecology of Soil Animals
By
J. A. Wallwork
doi:10.1038/227532b0
PDF (139K)
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| | Correspondence | |
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| | Chloramphenicol Misuse 533
EUGENE P. CRONKITE
doi:10.1038/227533a0
PDF (118K)
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| | Chloramphenicol Misuse (reply) 533
C. N. STEFANIS
doi:10.1038/227533b0
References | PDF (118K)
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| | Tune Without a Piper 534
LUIS W. ALVAREZ
doi:10.1038/227534a0
PDF (125K)
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| | Obituary | |
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| | Professor Thomas F. Goreau 534
doi:10.1038/227534b0
PDF (125K)
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| | Announcements | |
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| | Announcements 534
doi:10.1038/227534c0
PDF (243K)
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| | Erratum | |
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| | Erratum 535
doi:10.1038/227535a0
PDF (118K)
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| | British Diary | |
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| | British Diary 536
doi:10.1038/227536a0
PDF (163K)
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| | Reports and Publications | |
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| | Reports and Publications 536
doi:10.1038/227536b0
PDF (163K)
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