publishers of the books in question. For the reproduction of the early
portrait of Mr. Darwin we are indebted to Miss Wedgwood; for the
interesting portraits of Hugh Falconer and Edward Forbes we have to thank
Mr. Irvine Smith, who obtained for us the negatives; these being of paper,
and nearly sixty years old, rendered their reproduction a work of some
difficulty. We also thank Messrs. Elliott & Fry for very kindly placing at
our disposal a negative of the fine portrait, which forms the frontispiece
to Volume II. For the opportunity of making facsimiles of diagrams in
certain of the letters, we are once more indebted to Sir Joseph Hooker, who
has most generously given the original letters to Mr. Darwin's family.

Cambridge, October, 1902.



TABLE OF CONTENTS.


CONTENTS OF VOLUME I.

Outline of Charles Darwin's Life, etc.


CHAPTER 1.I.--An Autobiographical Fragment, and Early Letters, 1809-1842.

CHAPTER 1.II.--Evolution, 1844-1858.

CHAPTER 1.III.--Evolution, 1859-1863.

CHAPTER 1.IV.--Evolution, 1864-1869.