FOREWORD TO SECOND EDITION. 9 
ters. I realize that they, as well as intelligent readers 
generally, may not meet, with confidence the statements 
of a theologian on a scientific question, least of all when he 
essays to treat such a question from the standpoint of 
science. He is presumed to be at home in theology, 
but a stranger in the domain of geology, astronomy, and 
biology. It is for the purpose of obtaining a hearing at 
all that these introductory remarks are written. But the 
argument must stand on its own merits. The writer will 
now retire to the background. The facts shall speak. 
THAG 
FOREWORD TO SECOND EDITION. 
This treatise issued from the press in May, 1921, and 
was accorded an exceedingly cordial reception by the 
-reviewers, both in Lutheran journals of every Synodical 
connection and in the organs of other Christian denomina- 
tions. During the: past six months the discussion of 
evolution has entered the forefront of interest among the 
American people, and the monthly magazines and Sunday 
papers, quickly sensing the popular demand, have printed 
countless articles and editorials on the subject. It was 
fortunate for our book that it found a market so well 
prepared for it. The publisher has now requested that 
the text be revised and brought up-to-date wherever 
necessary, as a second edition is about to issue. Aside 
from the correction of a few typographical errors no 
changes have been made in the text matter. However, 
an index of subjects and authors has been added and in 
an appendix the most recent phase of the controversy 
has received attention. 
As supplementary reading to Chapter Eleven we 
would suggest to those acquainted with the principles of 
