Pioneers of American science.
Benjamin Franklin, by S. Weir Mitchell.
Alexander von Humboldt [by Baron Speck von Sternburg]
John James Audubon, by C. Hart Merriam.
John Torrey, by Nathaniel L. Britton.
Joseph Henry, by Robert S. Woodward.
Louis Agassiz [by Edward E. Hale and F.W. Putnam]
James Dwight Dana, by Arthur T. Hadley.
Spencer Fullerton Baird, by Hugh M. Smith.
Joseph Leidy, by William Keith Brooks.
Edward Drinker Cope, by Henry Fairfield Osborn.