Lew Trenchard, England.

"It is a very clever book."--DAVID STARR JORDAN,

Leland Stanford University.

"I have found your book extremely interesting, putting old facts in a new light, and full of acute remarks. Current theories needed criticism."--A.H. SAYCE,

Oxford University, England.

"You have brought out with great clearness the difficulties of supporting the evolution theory from the geological side."--GEORGE HOWARD PARKER,

Professor of Zoology, Harvard University.

"It is a remarkable piece of logical reasoning."--FRANKLIN JOHNSON,

The University of Chicago.

"It was needed. I think you have peeled the onion-coat theory completely. To and your book is like finding a spring after toiling through the dry-as-dust desert. It is refreshing and enjoyable."--GILBERT E. BAILEY,