4 
C. L. Herrick 
is quite independent of these considerations; it lies rather in the 
insight given into the workings of a philosophically acute mind 
unusually richly furnished with the concrete data of scientific 
observation. 
In 1885 Mr. Herrick was elected Professor of Geology and 
Natural History in Denison University, and in the course of the 
year following this appointment he founded the Denison Scientific 
Association and established the Bulletin of the Scientific 
Laboratories of Denison University as the organ of publi- 
cation of this association and the exponent of the scientific life 
of the college. On this, the twenty-fifth anniversary of his 
professorship, the Denison Scientific Association sends forth 
this volume, containing some of the fruits of Professor Herrick’s 
ripest thinking, in the belief that by the dissemination of his own 
words it can best honor the memory of its founder. 
The Editors. 
