I The Grand Canyon

II Night and the Abyss

III The Wings

I Pythagoras

II Aristotle

I Farabi and Avicenna

II Avicenna’s Dream

I HILLS AND THE SEA

II AT FLORENCE

I THE ROCK OF THE GOOD VIRGIN

II MALESHERBES AND THE BLACK MILESTONES

III THE SHADOW OF PASCAL

IV AT PARIS

V THE RETURN

Linnæus

I Lamarck and Buffon

II Lamarck, Lavoisier, and Ninety-three

III An English Interlude: Erasmus Darwin

IV Lamarck and Cuvier: The Vera Causa

I THE DISCOVERER

II THE PROPHET

I CHANCE AND DESIGN

II THE VOYAGE

III THE TESTIMONY OF THE ROCKS

IV THE PROTAGONISTS

V The Vera Causa