Orang-outang, sive Homo sylvestris

Originally published in 1699 and later reprinted by Dawsons of Pall Mall in 1751, Edward Tyson’s Orang-outang, sive Homo sylvestris is a foundational text in the field of comparative anatomy. Tyson, a physician and fellow of the Royal Society, performed the first detailed dissection of a chimpanzee—which he misidentified as an orangutan—to investigate the physiological similarities between primates and humans. The work served as a significant early contribution to the study of biological taxonomy and the Great Chain of Being.

The book is celebrated for its precise anatomical illustrations, likely executed by William Cowper, which provided an unprecedented look at the skeletal and muscular structures of the specimen. By meticulously comparing the ape to both human and monkey subjects, Tyson sought to bridge the gap between man and the natural world. Although his conclusions were debated by his contemporaries, the text remains a landmark in scientific history for its objective approach to comparative biology and its influence on later Enlightenment thinkers.