Penguin Books Ltd, Harmondsworth, Middlesex, England
Penguin Books Australia Ltd, Ringwood, Victoria, Australia
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First published by Oxford University Press 1949
This revised edition published in Pelican Books 1966
Reprinted 1968, 1970, 1972
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This whole work is copyright under the Berne Convention
Chapter 15 © Oxford University Press, 1966
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Made and printed in Great Britain
by Richard Clay (The Chaucer Press) Ltd,
Bungay, Suffolk
Set in Monotype Times
This book is sold subject to the condition that it shall not, by way of trade or otherwise, be lent, re-sold, hired out, or otherwise circulated without the publisher's prior consent in any form of binding or cover other than that in which it is published and without a similar condition including this condition being imposed on the subsequent purchaser