258 Joseph Barrell. 



tributes most abundantly to the deposits of the sea are 

 coal ashes, broken dishes, and bottles. These are being 

 permanently incorporated in the crust. . . . The name 

 being recorded most widely and indelibly on the earth 

 at the present time is the name of him who made 

 Milwaukee famous." 



As a teacher, Barrell was by far the most effective 

 with graduate students and geologists. The former 

 were enthusiastic in their praises of their instructor 

 in dynamical and structural geology, for he gave them 

 much that was not to be found in books. He succeeded 

 well with the undergraduates, but many of them found 

 him exacting in detail, and some would say that he was 

 "too statistical," referring to the detail that the first- 

 year man in college geology does not properly appreci- 

 ate. On the other hand, one of his graduate students, 

 Carl 0. Dunbar, writes: "I shall prize even more than 

 ever those golden days when I sat before him watching 

 the twinkle in his eyes that so often foreshadowed a 

 brilliant thought that was taking shape behind them. 

 His image will always be my conception of the thinker. ' ' 

 Another, Walter A. Bell, says: "There was our ad- 

 miration and appreciation of his keen analytical mind 

 which was balanced on the other hand by the breadth 

 of his judgment and the depth of his fertile imagina- 

 tion. But there was more than this — a more elusive 

 personal charm that bound us to him. He stimulated 

 the mind as cool mountain breezes and mountain heights 

 stimulate the senses. You rarely sensed this in his 

 writings, but always in conversation, in the class room, 

 or wherever you came into personal touch with his 

 intellectual vitality. ' ' 



As a lecturer, Barrell was often called on by univer- 

 sities other than Yale. In 1912 he gave a series of five 

 lectures at the University of Illinois, dealing with "The 

 Bearing of Geology on Man's Place in Nature," and 

 "The Measurements of Geologic Time." In 1914 he 

 gave a course of three Sigma Xi lectures at the Uni- 

 versities of Missouri and Kansas. At Columbia he gave 

 two years later six lectures on isostasy, and at New 

 Haven he presented before both the Sigma Xi and Phi 

 Beta Kappa societies his interesting talk on "The 

 Habitability of Worlds." 



As a geologic expert, Barrell testified in a number 



