as to the arrangement of the book, and to Miss Joan Evans for
unpublished information about Cluniac monasteries in
England. I should also like to thank the clergy and other
custodians of medieval works of art who have given me facili-
ties for studying them, and the publishers for their zealous
co-operation in the matter of the illustrations, upon which
the usefulness of such a book as this so largely depends; and
my grateful acknowledgements are due to the Museum
authorities and others who have permitted the reproduction
of objects in their charge or of photographs belonging to them.
Finally, I must record my debt to the pioneers in this field
of study, and especially to the late Mr. W. R. Lethaby.

I should like, in conclusion, to draw attention to the
bibliography at the end of the book, which contains the
names of the principal works of reference, and supplements
the short lists of special works which appear at the ends
of the chapters.

O. E. S.

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