The works of Francis Maitland Balfour, Volume 3 (of 4)

Opening of the book

THE WORKS
OF
FRANCIS MAITLAND BALFOUR.
VOL. III.
Memorial Edition.
Cambridge:
PRINTED BY C. J. CLAY, M.A. AND SON,
AT THE UNIVERSITY PRESS.
Memorial Edition.
THE WORKS
OF
FRANCIS MAITLAND BALFOUR,
M.A., LL.D., F.R.S.,
FELLOW OF TRINITY COLLEGE,
AND PROFESSOR OF ANIMAL MORPHOLOGY IN THE UNIVERSITY OF
CAMBRIDGE.
EDITED BY
M. FOSTER, F.R.S.,
PROFESSOR OF PHYSIOLOGY IN THE UNIVERSITY OF CAMBRIDGE;
AND
ADAM SEDGWICK, M.A.,
FELLOW AND LECTURER OF TRINITY COLLEGE, CAMBRIDGE.

VOL. III.
A TREATISE ON COMPARATIVE EMBRYOLOGY.
Vol. II. Vertebrata.
London:
MACMILLAN AND CO.
1885
[The Right of Translation is reserved.]
PREFACE TO VOLUME II.
The present volume completes my treatise on Comparative
Embryology. The first eleven chapters deal with the
developmental history of the Chordata. These are followed
by three comparative chapters completing the section of
the work devoted to Systematic Embryology. The remainder
of the treatise, from Chapter XIV. onwards, is devoted to
Organogeny. For the reasons stated in the introduction to
this part the organogeny of the Chordata has been treated
with much greater fulness than that of the other groups of
Metazoa.
My own investigations have covered the ground of the
present volume much more completely than they did that of
the first volume; a not inconsiderable proportion of the
facts recorded having been directly verified by me.
The very great labour of completing this volume has been
much lightened by the assistance I have received from my
friends and pupils. Had it not been for their co-operation
a large number of the disputed points, which I have been
able to investigate during the preparation of the work,
must have been left untouched.
My special thanks are due to Mr Sedgwick, who has not only

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