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Advances in PARASITOLOGY VOLUME 7 This Page Intentionally Left Blank This Page Intentionally Left Blank Photo R . D. Reed Professor Ben Dawes, Editor of Advances in Parasitology Advances in PARASITOLOGY Edited by BEN DAWES Department of Zoology, King’sCollege, University of London, England VOLUME 7 1969 ACADEMIC PRESS London and New York ACADEMIC PRESS INC. (LONDON) LTD. Berkeley Square House Berkeley Square London, WlX 6BA U.S. Edition published by ACADEMIC PRESS INC. 11 1 Fifth Avenue New York, New York 10003 Copyrght 0 1969 by ACADEMIC PRESS INC. (LONOON) LTD AN rights reserved No part of this-book may be reproduced in any form, by photostat, mrofilm, or any o$ei means, without written permission from the publislRrs kibrai-y of Congress Catalog Card Number: 62-22124 PRINTED IN GREAT BRITAIN BY ADLARD & SON LTD, DORKING CONTRIBUTORS TO VOLUME 7 TJ. C. BORAY,Division of Animal Health, C.S.I.R.O., McMaster Laboratory, Glebe, N.S. W. 2037, Australia (p. 95) *T. E. GIBSON,Central Veterinary Laboratory, Weybridge, Surrey, England (p. 349) J. F. MICHEL,Central Veterinary Laboratory, Weybridge, Surrey, England (P.211) C. B. OLLERENSHAW, Central Veterinary Laboratory, Weybridge, Surrey, England (p. 283) L. P. SMITH,Meteorological Ofice, Bracknell, Berkshire, England (p. 283) S. R. SMITHERS, Division of Parasitology, National Institute for Medical Research, London, England (p. 41) *J. D. SMYTH,Department of Zoology, Australian National University, Canberra, Australia (p. 327) R. J. TERRY, Department of Biology, Brunel University,London, England (p. 41) J. M . WEBSTER, Pestology Centre, Department of Biological Sciences, Simon Fraser University, Burnaby, Vancouver, B.C., Canada (p. 1) * M m o YOKOGAWA, Department of Parasitology, School of Medicine, Chiba University, Chiba, Japan (p. 375) * Authors in the section 9 h o r t Reviews”. t Now at Znstitut fur Parasitologie der Universitat Zurich, Winterthurerstrasse 260, 8057 Zurich, Switzerland. V This Page Intentionally Left Blank FOREWORD I am uniquely qualified to write this foreword, as I was Professor Ben Dawes’ first Ph.D. student and as such I can vouch from first-hand experience to the thoroughness with which he applies himself to any task. Subsequently, it has been my good fortune to have been his colleague and friend for over twenty years, and now he goes into compulsory retirement from the University of London King’s College after 42 years of teaching and research. He will leave a void which will be difficult to fill, for as a group of recently qualified graduates remarked, he fired them with enthusiasm for parasitology and one could not help but learn from him. Professor Dawes was trained at the Royal College of Science (Imperial College), was for 2-3 years Research Assistant at the Plymouth Laboratory of the Marine Biological Association, came to King’s College 39 years ago and gained promotion to Lecturer in 1935, Reader in 1946 and Professor in 1963. During this period his teaching has been concerned with many groups of animals and various aspects of zoology to students of all levels, and he has instituted courses in such varied biological subjects as cytology, dental histology, experimental zoology, comparative physiology, and parasitology. For some years he was also Visiting Lecturer at what is now Sir John Cass College and organized its first B.Sc. course in Zoology. For more than 15 years he was Scientific Assistant (Zoology) to the University of London and was responsible for the conduct of practical examinations at local, provincial and colonial centres. He has had a long and varied experience of examining work at all levels and for 20 years he has