The Making of Species

The purpose of this book is well expressed in the Preface by the statement of the authors that each had a feeling that the problems of the origin of species had not been settled, and alone each one felt unable to attack and settle so momentous a question; but apparently they found strength in union and have attempted to settle the question of species-making. Most naive is their statement in the Introduction: "Our aim in writing this book has been twofold: In the first place, we have attempt...