Age and area; a study in geographical distribution and origin of species . 38MMH TTlTTfTnr T TTfiF. LONDON : H. K. LEWIS AND CO., Ltd., 136, Gower Street, 1LONDON: WHELDON AND WESLEY, Ltd., 28, Essex Street, Strand, 2NEW YORK: THE MACMILLAN } CALCUTTA \ MACMILLAN AND CO., J TORONTO : THE MACMILLAN CO. OF CANADA, : MARU ZEN-KABUSHIKI-KAISHA ALL RIGHTS RESERVED AGE AND AREA A STUDY IN GEOGRAPHICAL DISTRIBUTIONAND ORIGIN OF SPECIES BY J. C. WILLIS , , Hon. (Harvard), Correspondent, late Director, Botanic Gardens,Rio de Janeiro


Age and area; a study in geographical distribution and origin of species . 38MMH TTlTTfTnr T TTfiF. LONDON : H. K. LEWIS AND CO., Ltd., 136, Gower Street, 1LONDON: WHELDON AND WESLEY, Ltd., 28, Essex Street, Strand, 2NEW YORK: THE MACMILLAN } CALCUTTA \ MACMILLAN AND CO., J TORONTO : THE MACMILLAN CO. OF CANADA, : MARU ZEN-KABUSHIKI-KAISHA ALL RIGHTS RESERVED AGE AND AREA A STUDY IN GEOGRAPHICAL DISTRIBUTIONAND ORIGIN OF SPECIES BY J. C. WILLIS , , Hon. (Harvard), Correspondent, late Director, Botanic Gardens,Rio de Janeiro WITH CHAPTERS BY HUGO DE VRIES, H. B. GUPPY, , Mrs E. M. REID, , JAMES SMALL, , [These authors are not committed, by writing these chapters,to the support of all the doctrines here advanced] CAMBRIDGEAT THE UNIVERSITY PRESS1922 H 0&322, SCIENCE QH PREFACE Some thirty years ago, a pupil of the strictest school of naturalselection, and enthusiastic in my belief in its principles, I setout upon a course of independent observation of nature. Tenyears oageareastudyinge00will_0


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