In 1665, the Royal Society published Robert Hooke's Micrographia: or, Some Physiological Descriptions of Minute Bodies Made by Magnifying Glasses. As in the engraving of a flea (left), the illustrations folded out of the book to allow for large, highly detailed drawings. The text accompanying this image reads, "The strength and beauty of this small creature, had it no other relation at all to man, would deserve a description."