BIBLIOGRAPHICAL NOTE.
First Edition (Demy 8vo) 1899
Second Edition, Revised and Enlarged (Demy 8vo) 1908
Third Edition, Revised and Enlarged to Two Volumes (Royal
8vo), of which this is Volume I May, 1918
Fourth Edition (Vol. I.), Revised and Enlarged .... April, 1921
PRINTED IN GREAT BRITAIN
BY THE ABERDEEN UNIVERSITY
PRESS LTD., ABERDEEN.