REVIEWS

Atlas of Mapped Distributions of Dominance and Modern Pollen Percentages for Important Tree Taxa of Eastern North America . By P. A. D elcourt , H. R. D elcourt and T. W ebb III.
New Manual of Bryology. Volume 1. Edited by R. M. S chuster .
The Ecology and Physiology of the Fungal Mycelium. Edited by D. H. J ennings and A. D. M. R ayner .
Isotopes and Radiation in Agricultural Sciences. Edited by M. E. L'A nnunziata and J. O. L egg .
The Physiology of Flowering Plants : their growth and development . Third edition. By H. E. S treet and H. Ö pik .
Reconstructing Quaternary Environments. By J. J. L owe and M. J. C. W alker .
European Mires. Edited by P. M oore .
Compartments in Algal Cells and Their Interaction. (Proceedings in Life Sciences Series.) Edited by W. W iessner , D. G. R obinson and R. C. S tarr .
Chloroplast Metabolism. By B arry H alliwell .
Flooding and Plant Growth. Ed. by T. T. K ozlowski .
Mode of Action of Antifungal Agents. Ed. by A. P. J. T rinci and J. F. R yley .
Disease Resistance in Plants. By J. E. V anderplank .     

REVIEWS

Plant Communities of the Scottish Highlands. A Study of Scottish Mountain, Moorland and Forest Vegetation . (Monographs of the Nature Conservancy, No. 1.) By D onald McV ean and D erek A. R atcliffe .
* L unde , T. (1962). An investigation into the pH-amplitudes of some mountain plants in the county of Trorns. Acta borealia. A: Scientia , Nr. 20.
Physiology and Biochemistry of Algae . Edited by R alph A. L ewin .
Fungal Genetics . By J. R. S. F incham and P. R. D ay .
The Young Botanist . By C. T. P rime .
Organization in Plants . By W. M. M. B aron .
Chromosome Marker . By K. R. L ewis and B. J ohn .
Symbiotic Associations . Thirteenth Symposium of the Society for General Microbiology. Edited by P. S. N utman and B arbara M osse .
The Developmental Anatomy of Isoetes. By D ominick J. P aolillo , Jr.
Cucurbits: Botany, Cultivation and Utilization . By T homas W. W hitaker and G len N. D avis .
Common Malayan Plants . By H. B. Gilliland.
Sierra Nevada Natural History . By T racey L. S torer and R obert R. U singer .
Croissance et Développement des Plantes . By L ucie K ofler .
Modern Methods of Plant Analysis , vol. VI. Founded by K. P aech and M. V. T racey , continued by H. F. L inskens and M. V. T racey in co-operation with B. D. S anwal .
Enzyme Chemistry of Phenolic Compounds . Edited by J. B. P ridham .     

Reviews

Book reviewed in this article:
The Electron Microscope. By M. E. H aine
Chemical Control of Insects. 2nd ed. By T. F. W est and J. E liot H ardy.
Principles of Animal Taxonomy. By G. G. S impson.
Encyclopaedia of Plant Physiology. (The late W. R uhland ed.)
Mechanisms in Biological Competition. (Symposia of the Society for Experimental Biology. XV.) Edited by F. L. M ilthorpe.     

Reviews

Book Reviewed in this article:
Patterns in Plant Development. By T. A. S teeves and I. M. S ussex .
Plant Growth Substances 1970. Ed. by D. J. C arr .
Methods in Enzymology. Vol. XXIV. Photosynthesis and Nitrogen Fixation , Part B. Ed. by A nthony S an P ietro (Series Ed. by S idney P. C olman and N athan O. K aplan ).
Biochemistry of Photosynthesis. By R. P. F. G regory .
The Growth of Bulbs. By A. R. R ees .
Annual Review of Plant Physiology ,
Ecology of Heathlands. By C. H. G imingham .
Anatomy of the Monocotyledons. VI. Dioscoreales. By E. S. A yensu . Ed. by C. R. M etcalfe .
A Computer-Mapped Flora. A Study of the County of Warwickshire. By D. A. C adbury , J. G. H awkes and R. C. R eadett .     

REVIEWS

Books reviewed in this article:
Physiology of plants and their cells. By J. A. G ross .
Plant Physiology. By M eiron T homas , S. L. R anson and J. A. R ichardson .
Rate Control of Biological Processes. Symposium No. 27 of the Society for Experimental Biology. Ed. by D. D. D avies
Towards an Understanding of the Mechanism of Heredity. By H. L. K. W hitehouse .
Chromosome Botany and the Origins of Cultivated Plants. By C. D. D arlington .
Handbook of Phycological Methods: Culture Methods and Growth Measurements. By J anet R. S tein (Ed.)
Drawings of British Plants. Part XXXI. Lemnaceae, Alismataceae, Butomaceae, Junca-ginaceae, Scheuchzeriaceae, Potamagetonaceae, Ruppiaceae, Zannichelliaceae, Zosteraceae, Najadaceae, Eriocaulaceae. By S tella R oss -C raig .
Census Catalogue of the Flora of Ireland. By M. J. P. S cannell and D. M. S ynnot .
The Genus Lesquerella (Cruciferae) in North America. By R. C. R ollins and E. A. S haw .
Allgemeine Geobotanik. By H. W alter .
Einführung In Die Botanik. By R. B ornkamm .
Ökologie der Pflanzen. By W. L archer .     

REVIEWS

Book reviewed in this article:
Plant Cells . By F. A. L. C lowes and B. E. J uniper .
The History of British Vegetation . By W inifred P ennington . Modern Biology: General Editor J. E. W ebb .
Flora Europaea , Vol. II. Rosaceae to Umbelliferae . Ed. by T. G. T utin , V. H. H eywood , N. A. B urges , D. M. M oore , D. H. V alentine , S. M. W alters and D. A. W ebb .
Desert Wild Flowers . By E dmund J aeger .
British Mosses and Liverworts . By E. V. W atson .
Anatomy of the Monocotyledons , Vol. III. Commelinales—Zingiberales . By P. B. T omlinson . General Editor C. R. M etcalfe .
Biological Science—The Web of Life . Supervising Editor, D. M organ .
Plant Chimeras . By W. N eilson -J ones .
The Potatoes of Argentine, Brazil, Paraguay and Uruguay, a Biosystematic Study . By J. G. H awkes and J. P. H jerting .
Towards an Understanding of the Mechanism of Heredity . By H. L. K. W hitehouse .
Viruses in Plant Hosts; Form, Distribution and Pathologic Effects . By K atherine E sau .
An Introduction to Industrial Mycology . By G eorge S mith .     

REVIEWS

Environmental Control of Plant Growth . Edited by L. T. E vans .
Flora of the British Isles, Illustrations. Part 3. Boraginaceae to Compositae . Drawings by S ybil J. R oles .
The Germination of Seeds . By A. M. M ayer and A. P oljakoff -M ayber .
Chromosome Botany and the Origins of Cultivated Plants . By C. D. D arlington .
Recherches Physiologiques sur le Repos Vegetatif de la Vigne (Vitis vinifera L .): La Dor-mance des Bourgeons et le Mecanisme de sa Disparition . By R. Pouget.
Radiation Induced Chromosome Aberrations . Edited by S heldon W olff .
John Clayton, Pioneer of American Botany . By E dmund and D orothy S mith B erkeley .
The Absorption of Solutes by Plant Cells . By D. H. J ennings .
Woody Flora of Taiwan . By HUI-LIN LI.
The Annual Species of Medicago. By C haia C lara H eyn .
The Flowering Process . By F rank B. S alisbury .
General Microbiology . By R oger J. S tanier , M ichael D udoroff and E dward A. A delberg .
The Biochemical Approach to Life . By F. R. J evons .     

Book Reviews

Holme, N.A. & Mclntyre, A.D. (Eds) (1984) Methods for the Study of Marine Benthos.
Lewis, W.M., Saunders, J.F., Crumpacker, D.W. & Brendecke, CM. (1984) Eutrophication and Land Use: Lake Dillon, Colorado.
McKeown, B.A. (1984) Fish Migration.
von Brandt, A. (1984) Fish Catching Methods of the World
Barnes, R.S.K. (1984) Estuarine Biology.
Dumont, H.J. & Tundisi, J.G. (Eds) (1984) Tropical Zooplankton.
Wootton, R.J. (1984) A Functional Biology of Sticklebacks
Fernando, C.H. (Ed.) (1984) Ecology and Biogeography in Sri Lanka.
Haworth, E.W. & Lund, J.W.G. (Eds) (1984) Lake Sediments and Environmental History.
Petts, G.E. (1984) Impounded Rivers. Perspectives for Ecological Management.
Whitton, B.A. (Ed.) (1984) Ecology of European Rivers.     

REVIEWS

Book reviewed in this article:
Excursion Flora of the British Isles , 2nd edn. By A. R. C lapham , T. G. T utin and E. F. W arburg .
Critical Supplement to the Atlas of the British Flora . Ed. by F. H. P erring assisted by P. D. S ell .
Drawings of British Plants . Part XXIV. Labiatae . By S tella R oss -C raig .
Britain's Green Mantle , 2nd edn. By the late A. G. T ansley . Revised by M. C. F. P roctor .
The Flora of Berkshire . By H. J. M. B owen .
Flora of Turkey and the East Aegean Islands . By P. H. D avis , assisted by J. C ullen and M. J. E. C oode .
Plants and Man on the Seychelles Coast . By J. D. S auer .
Key to the Families of Flowering Plants of the World . Revised and enlarged by J. H utchinson .
The Diversity of Green Flants . By P. R. B ell and C. L. F. W oodcock .
IBP Handbook No . 5: Handbook to the Conservation Section of the International Biological Programme . By E. M. N icholson .
Plants, Man and Life , 2nd edn. By E dgar A nderson .
Production and Mineral Cycling in Terrestrial Vegetation . By L. E. R odin and N. I. B azilevich . Translation by Scripta Technica Ltd (Ed. by G. E. F ogg ).
'Torrey Canyon' Pollution and Marine Life . A Report by the Plymouth Laboratory of the Marine Biological Association of the United Kingdom. Ed. by J. E. S mith .
Geobotanische Untersuchungen auf der Feddersen Wier de . By U. K örber -G rohne .
Cell Walls and Membranes . By H. J. R ogers and H. R. P erkins .
Wachstums regulatoren bei Pflanzen . Ed. by E. L ibbert and B. S teyer .
The Ecology of Soil Bacteria ( An International Symposium ). Ed. by T. R. G. G ray and D. P arkinson .
Genetics of Fungi . By K arl E sser and R udolf K uenen . Translated by E rich S teiner .
Plant Pathologist's Pocketbook . Compiled by The Commonwealth Mycological Institute.     

REVIEWS

Review in this article:
The Grass, Fern and Savannah Lands of Ceylon, their Nature and Ecological Significance. By C. H. H olmes .
Guide to the National Pinetum and Forest Plots at Bedgebury. By W. D allimore , R. F. W ood and others. Edited for H.M. Forestry Commission by J. M acdonald and H. J. E dlin .
Elementary Genetics. By W ilma G eorge .
The Stipitate Hydnums of the Eastern United States. By W illiam C hambers C oker and A lma H olland B eere .
Leaf Analysis. By H. L undegårdh , translated by R. L. M itchell .
Trace Elements in Plant Physiology (Lotsya, Vol. 3, I.U.B.S. Colloquia, Series B., No. 1).
Respiration et Métabolisme Azoté ( Etude de physiologie foliaire ) By A lexis M oyse .
Manual of Phycology. An Introduction to the Algae and their Biology. Edited by G ilbert M. S mith .
Recent Advances in the Study of Plant Viruses. By K enneth M. S mith .
An Introduction to the Anatomy of Seed Plants. By E. L. S tover .
Drawings of British Plants. Part V. Caryophyllaceae. By S tella R oss -C raig .
Zur Lebensgeschichte des Schilfs an den Ufern der Schweizer Seen. Beiträge zur geobotanischen Landesaufnahme der Schweiz. Heft 30. By H ans H ürlimann .
Vegetationskarte der Schweiz. In four sheets, I-IV. Scale 1: 200,000. By E mil S chmid .
Native Orchids of North America. By D. S. C orrell .
Advances in Genetics. Vol. IV. Edited by M. D emerec .
Flora of the British Isles. By A. R. C lapham , T. G. T utin and E. F. W arburg .
Introduction to Mycology. By J. A. M acdonald .     

Reviews

Book Reviewed in this article:
Phloem Transport in Plants. By A. S. C rafts and C. H. C risp .
Introduction to the Fine Structure of Plant Cells. By M yron C. L edbetter and K eith R. P orter .
Symposia of the Society for Experimental Biology No. 25. Control Mechanisms of Growth and Differentiation. Ed. by D. D. D avies and M. B alls .
Plant Lipid Biochemistry. By C. H itchcock and B. W. N ichols .
Cell Respiration. By W. O. J ames .
Prediction and Measurement of Photosynthetic Productivity.
Fortschritte der Botanik , Vol. 32. Ed. by H. E llenberg , K. E sser , H. M erxmüller , P. S itte and H. Z iegler .
Stoffwechselphysiologie der Pflanzen. By G. R ichter .
Pflanzenphysiologie. By D. H ess .
Moleculare Grundlagen der Entwicklung. By H. M ohr and P. S itte .
The Diversity of Green Plants. By P eter B ell and C hristopher W oodcock .
Anatomy of the Monocotyledons. Ed. by C. R. M etcalfe . Vol. V. Cyperaceae. By C. R. M etcalfe .
Soil Micro-organisms. By T. R. G. G ray and S. T. W illiams .
Des Ovules aux Graines. By M. F avre -D uchartre .
Ecology of Leaf Surface Micro-organisms. Ed. by T. F. P reece and C. H. D ickinson .
Fungal Genetics. By J. R. S. F incham and P. R. D ay .
Étude du Mode de Reproduction: Apomixie Facultative du Point de Vue de la Génétique des Populations. (Study of Facultative Apomixis from the View-point of Population Genetics). By J. P erèns .
Drawings of British Plants ; Part XXVIII: Hydrocharitaceae, Orchidaceae. By S tella R oss -C raig .
Plants of Hong Kong. By S. L. T hrower .
An Atlas of Plant Structure , Vol. 1. By B rian B racegirdle and P atricia H. M iles .
Bioiléctricité, Quelques Problèmes. By S. M eylan .
Studying the Past by Pollen Analysis. By R. G. W est .
The Mysterious Origin of Flowering Plants. By K enneth R. S porne .     

REVIEWS

Review in this article:
Biographien von PJianzensippen. By R udolf S charfetter .
Drawings of British Plants. Part VII, Leguminosae. By S. R oss -C raig .
Abnormal and Pathological Plant Growth. Brookhaven Symposia in Biology, No. 6.
An Introduction to Pollen-analysis. By G. E rdtman .
Plant Respiration. By W. O. J ames .
The Acanthaceae of Colombia , vol. 11. By E mery C. L eonard .
Protoplasmatologia. Handbtich der Protoplasmaforschung , Band vi, C. Endomitose und Endomitotische Polyploidisierung. By L othar G eitler . Edited by L. V. H eilbrunn and E. W eber .
Genetic Homeostasis. By I. M ichael L erner .
British Knapweeds: a Study in Synthetic Taxonomy. By E. M. M arsden -J ones and W. B. T urrill .
The Enzymology of the Cell Surface. By A. R othstein . Tension at the Cell Surface. By E. N. H arvey .
Chemistry and Physiology of Mitochondria and Microsomes. By O. L indberg and L. E rnster .     

REVIEWS

Book reviewed in this article:
Laboratory Administration. By E. S. HISCOCKS.
A Text-book of Plant Virus Diseases. (2nd edition.) By KENNETH M. SMITH.
The Storage of Seeds for Maintenance of Viability. By E. BIASUTTI OWEN.
The Study of Plant Communities. (2nd edition.) By HENRY J. OOSTING. Pp. 440. San Francisco: W. H. Freeman and Co.
Annotated Catalogue of African Grasshoppers. By H. B. JOHNSTON.
Physical Chemistry. By S. C. WALLWORK.
Learning and Instinct in Animals. By W. H. THORPE.
Enzyme, Antigen and Virus. By Sir MACFARLANE BURNET.
The Water Relations of Terrestrial Arthropods. By Professor E. B. EDNEY.
Investigation of Virus Diseases of Brassica Crops. By L. BROADBENT.     

REVIEWS

Book reviewed in this article:
An Introduction to Plant Biochemistry . By C atherine C assels S teele .
1. Virus Diseases of Plants: A Bibliography . By D. A tanasoff .
2. Partial Bibliography of Virus Diseases of Plants . By J. I. O tero and M. T. C ook .
Investigations on Barley . By Sir E. J. R ussell and L. R. B ishop .
The Gramineae, a Study of Cereal, Bamboo, and Grass . By A gnes A rber .
A History of Embryology . By J oseph N eedham .
Report on Fungus, Bacterial and other Diseases of Crops in England and Wales , 1928–32.
The Life Forms of Plants and Statistical Plant Geography, being the collected papers of C. Raunkiaer .
Plant Chimaeras and Graft Hybrids . By W. N eilson J ones . (Methuen's Monographs on Biological Subjects.)
The Genetics of Garden Plants . By M. B. C rane and W. J. C. L awrence .     

REVIEWS

Book reviewed in this article:
Plant Cell Structure and Metabolism. By J. L. Hall, T. J. Flowers and R. M. Roberts
The Developmental Biology of Plants and Animals. Ed. by C. F. Graham and P. F. Wareing.
The Physiology of Flowering Plants. (2nd Edition) H. E. Street & H. Öpik.
Nitrogen Metabolism in Plants. By L. Beevers.
Encyclopaedia of Plant Physiology. Volume 2, Transport in Plants II. Part A Cells. Edited by U. Lüttge and M. G. Pitman with a foreword by R.N. Robertson.
The Biology of Plant Phenolics. By J. R. L. Walker.
The Chemotaxonomy of Plants by P. M. Smith.
Lichenology: Progress and Problems. Ed. by D. H. Brown, D. L. Hawksworth and R. H. Bailey.
Microbiology of Aerial Plant Surfaces. Ed. by C. H. Dickinson and T. F. Preece.
Flora Europaea , Vol. 4. Plantaginaceae to Compositae (and Rubiaceae). Edited by T. G. Tutin, V. H. Heywood, N. A. Burges, D. M. Moore, D. H. Valentine, S. M. Walters and D. A. Webb with the assistance of A. O. Chater, R. A. DeFilipps and I. B. K. Richardson.
Flore de France. Fasicule 2. By M. Guinochet & R. de Vilmorin.
Trees and Bushes of Europe. By Oleg Polunin with drawings by Barbara Everard.
Tropical Rain Forest of the Far East. By T. C. Whitmore, with a chapter on soils by C. P. Burnham.
The Forest Service. A Study in Public Land Management. By Glen O. Robinson.
Aquatic Weeds in S.E. Asia (Proceedings of a Regional Seminar on Noxious Aquatic Vegetation, New Delhi, 12–17 December, 1973). Edited by C. K. Varshney and J. Rzoska.
Crop Genetic Resources for Today and Tomorrow (International Biological Programme 2). Ed. O. H. Frankel and J. G. Hawkes.
The Genetics of Algae (Botanical Monographs, Volume 12). Edited by Ralph A. Lewin.
Morphologische Studien im Bereiche der Pyrrhophyta. Das Problem Form und Selektion. By A. Böhm.     

Reviews

Book Reviewed in this article:
The Quantitative Analysis Of Plant Growth. By G. C lifford E vans
Biologie végétale. 3 tomes. Dirigée par P. P. G rasse .
How Grasses Grow. By R. H. M. L anger .
A Guidebook to Microscopical Methods. By A. V. G rimstone and R. J. S kaer .
Arealkunde Floristich—historiche Geobotanik. By H einrich W alter . 2nd edition by H erbert S traka .
The Miocene Flora of Kreuzau, Western Germany. I. The Leaf Remains. By D avid K. F erguson .
An Introduction to Palynology. IV. Pollen and Spore Morphology/Plant Taxonomy: Pteridophyta (text and additional illustrations). By G. E rdtman and P. S orsa .
Function and Evolution of Behavior: an Historical Sample from the Pens of Ethnologists. Ed. by P eter H. K lopfer and J ack P. H ailman .
Plant Phenolics. By P ascal R ibereau -G ayon . Translated by E. C. Bate-Smith, J. B. Harborne, T. Swain and I. B. K. Richardson. Ed. by V. H. Heywood.     

Review

Book Reviewed in this article:
Organelle Heredity. B y N icolas W. G illham .
Microbodies/Peroxisomen pflanzicher Zellen. By B. G erhardt .
Plant Metabolism. By G erhard R ichter .
Water in Plants Bibliography. Ed. by J. P ospisilova and J. S olarova .
Plant Growth Analysis. By R oderick H unt .
Progress in Botany. Morphology, Physiology, Genetics, Taxonomy, Geobotany. Ed. by H. E llenberg , K. E sser , H. Merxmüller, E. S chnepf and H. Z iegler .
Organisation in Plants. By W. M. M. B aron .
Plant Breeding for Pest and Disease Resistance. By G. E. R ussell .
Incompatibility in Angiosperms. By D. D e N ettancourt .
Soybean Physiology, Agronomy and Utilization. Ed. by A. G. N orman .
Flora of Turkey , Volume 6 ( Lobehaceae to Scrophulariaceae ). Ed. by P. H. D avis , assisted by J. R. E dmondson , R. R. M ill and B.S.P arris .
Tropical Trees and Forests. An Architectural Analysis. By F.H allé , R.A.A. O ldeman and P. B. T omlinson .
Vegetation Mitteleuropas mit den Alpen. By H einz E llenberg .     

REVIEWS

Book Reviewed in this article:
Flowering Plants, Origin and Dispersal . By A. T akhtajan. Translated from the Russian by C. J effrey.
Camellias of Japan . By T. T uyama.
Studies in Biology , No. 15. Developmental Plant Anatomy. By A lan R. G emmell.
Quaternary Ecology . Ed. by E. J. C ushing and H. E. W right J r .
Écologie appliquée à l'agriculture dans le nord vaudois . By K.-F. S chreiber. Translated from the German by M. V illard .
Welsh Ferns , 5th edn. By H. A. H yde and A. E. W ade .
Flora of Derbyshire . Ed. by A. R. C lapham .
Studies in Biology , No. 16. Plant Symbiosis. By G eorge D. S cott .     

REVIEWS

Book review in this article
Botanical Latin . By W. T. S tearn .
Laboratory Manual of Tropical Mycology and Elementary Bacteriology . By A. T hompson and G loria L im .
Agriculture in the Tropics . By C. C. W ebster and P. N. W ilson .
Bananas . By N. W. S immonds .
Rice . By D. H. G rist .
Tea . By T. E den .
Lowson's Botany . By E. W. S imon , K. J. D ormer and J. N. H artshorne .
Annual Review of Plant Physiology , Vol. 16. Ed. by L. M achlis and W. K. B riggs .
Ultrastructural Plant Cytology . By A. F rey -W yssling and K. M ühlethaler .
Drawings of British Platits . Part XXII, Scrophulariaceae (1). By S tella R oss
Molecules and Cells .By D. A. C oult . The Principles of Modern Biology. Ed. by D. A. C oult .
The Growth of Cereals and Grasses . Ed. by F. L. M ilthorpe and J. D. I vins .
Origins of Metidelism . By R. C. O lby .
Fungal Genetics . By J. R. S. F incham and P. R. D ay . Botanical Monographs, Vol. 4, ed. by W. O. J ames .
Genetik der Pilze . by K. E sser and R. K uenen .
Microbial and Molecular Genetics . By J. R. S. F incham . Modern Biology Series, ed. by J. E. W ebb .
Index Kewensis Plantarum Phanerogamarum, Supplementum XIII . Compiled at the Herbarium of the Royal Botanic Gardens, Kew, under the direction of Sir G eorge T aylor .
A Flora of Northeastern Minnesota . By O lga L akela .
Stephen Hales, D.D., F.R.S. An Eighteenth Century Biography . By A. E. C lark -K ennedy .     

REVIEWS

Book reviewed in this article:
Botanical Histochemistry: Principles and Practice . By W illiam A. J ensen .
The Biology of Cilia and Flagella . By M. A. S leigh .
Dünnschicht-Chromatographie . Edited by E gon S tahl .
Plant Embryology. A Symposium .
The Morphology of Pteridophytes . By K. R. S porne .
Introductory Mycology . By C. J. A lexopoulos .
Residue Reviews , Vol. 1. Edited by F. A. G unther .
Energy Exchange in the Biosphere . By D avid M. G ates .
Pathology of Trees and Shrubs with Special Reference to Britain . By T. R. P eace .
Modern Methods of Plant Analysis . Vol. V. Edited by H. F. L inskens and M. V. T racey .
The Growth of Plants . By G. E. F ogg .
An Introduction to Plant Physiology . By W. O. J ames .
Die Physiologische Uhr. Zeitmessung in Organismen mit ungefähr Tagesperiodischen Schwingungen . By E. B ünning .