Thoreau was a poet, a naturalist, a major American writer. Was he also a scientist? He was, Laura Dassow Walls suggests. Her book, the first to consider Thoreau as a serious and committed scientist, will change the way we understand his accomplishment and the place of science in American culture.
Walls reveals that the scientific texts of Thoreau's day deeply influenced his best work, from Walden to the Journal to the late natural...