He became a professor of geology at the university in 1920.

By 1924 he was a professor of geology at the institution.

The support for the new President, a 57-year-old geology professor, came from some unexpected places.

In 1969, he went to Dartmouth as a professor of geology.

He became professor of geology the following year and reached emeritus status in 1970.

He resigned the presidency in 1881, but continued as professor of geology until his death.

He conducted his research while on field trips with geology professors from the university.

Also, for what it's worth, his wife is a geology professor at the University of California.

He became professor of geology at Arizona State in 1977.

In 1870 he was chosen professor of geology at King's College.