Born in Switzerland, Louis Agassiz (1807-73) distinguished himself as one of the most capable and industrious naturalists of the nineteenth century, working in fields as diverse as ichthyology and glaciology. In the late 1840s, he moved to North America, where he became a professor of zoology at Harvard and established the Museum of Comparative Zoology. His extensive bibliography of all known works relating to zoology and geology, which he had compiled...