Nathaniel Southgate Shaler was an American paleontologist and geologist who wrote extensively on the theological and scientific implications of the theory of evolution, whose work is now considered scientific racism.
Nathaniel Shaler in 1894.
Jean Louis Rodolphe Agassiz FRS (For) FRSE was a Swiss-born American biologist and geologist who is recognized as a scholar of Earth's natural history.
Louis Agassiz
Agassiz in 1870
With Benjamin Peirce
Portrait photograph by John Adams Whipple, circa 1865