THE WORKS OF FRANCIS MAITLAND BALFOUR. VOL. I. Memorial Edition. Cambridge: PRINTED BY C. J. CLAY, M.A. AND SON, AT THE UNIVERSITY PRESS. [Illustration: Sketch of Francis Maitland Balfour] 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. I. SEPARATE MEMOIRS. London: MACMILLAN AND CO. 1885 [_The Right of Translation is reserved._] PREFACE. Upon the death of Francis Maitland Balfour, a desire very naturally arose among his friends and admirers to provide some memorial of him. And, at a public meeting held at Cambridge in October 1882, the Vice-Chancellor presiding, and many distinguished men of science being present, it was decided to establish a 'Balfour Fund' the proceeds of which should be applied: firstly to maintain a studentship, the holder of which should devote himself to original research in Biology, especially in Animal Morphology, and secondly, 'by occasional grants of money, to further in other ways original research in the same subject'. The sum of £8446 was subsequently raised; this was, under certain conditions, entrusted to and accepted by the University of Cambridge; and the first 'Balfour student' was appointed in October 1883. The publication of Balfour's works in a collected form was not proposed as an object on which part of the fund should be expended, since his family had expressed their wish to take upon themselves the charge of arranging for a memorial edition of their brother's scientific writings. That edition, with no more delay than circumstances have rendered necessary, is now laid before the public. It comprises four volumes.