The American Geologist. 
July, 1906 
the survey made up of the more popular parts of this work. 
He spent a year in Leipzig at the University during 1881- 
'82. And in 1883 he was married to Miss Alice Keith, of 
Minneapolis. 
He took his Masters and Doctors degree from the uni- 
versity of Minnesota. 
SECOND PERIOD. 1884-1889. 
Called to the chair of Geology and Natural History of 
Denison university. Granville,. Ohio, in the summer of 1884, 
he spent the fall of that year at Denison, then returned to 
Minneapolis to complete the work begun by him on the 
Minnesota survey and in the fall of 1885 moved with his 
family to Denison. It had been his intention to continue 
his zoological work there, and there was great activity in 
this line during the entire period, but the routine excursions 
made as a part of the instruction of his geology classes 
showed him so much of interest in the local strata that his 
chief labors while in Granville, were upon the fossils and 
stratigraphy of the Waverly free stones and shales of Ohio. 
This work was abruptly cut short by his removal from Gran- 
ville in 1889, and while never rounded out as he would have 
liked is probably his most important geological work. In 
1885 he founded the Bulletin of the Scientific Laboratories 
of Denison university, in which the greater part of his re- 
searches and those of his pupils on Ohio geology were 
published. 
His phenomenal success as a teacher during this and 
subsequent periods was due to factors some of which are 
easily seen — others hard to define. After his attractive per- 
sonal qualities and magnetic enthusiasm I should place his 
deep philosophical insight and the fearless way in which he 
opened up his profoundest thinking to even his most ele- 
mentary pupils. The ability to do this without befogging 
the air was an exceedingly rare gift and was stimulating to 
even a dullard. He knew the philosophical classics thor- 
oughly from original sources and the trend of his thinking 
was very early foreshadowed in the translation of Lotze's 
Outlines of Psychology, published in 1885 in Minneapolis, 
with its appended chapters on the nervous system. 
