Nineteenth Century Collections Online: Science, Technology, and Medicine: 1780-1925, Part 1 and 2 This link opens in a new windowThe Science, Technology, and Medicine archive includes some three million pages of scientific material from the late seventeenth century through the first quarter of the twentieth century, with a primary focus on the nineteenth century. The collection is divided into four major parts: academies of science publications, natural history, public health, and entomology.