A survey of the titular "Great Naturalists" from antiguity to the 19th century, from Aristotle to Asa Gray. Biographies range from a couple pages to around twenty for some of the more notable ones. There are only two women profiled (Maria Sibylla Merian and Mary Anning) though that can be handwaved due to a focus on western natural history. Full color illustrations are the highlight of this (and honestly should accompany most things about natural history in my opinion).