During the height of the Victorian era, some of the finest works of art could only be viewed through a microscope. Their materials: The tiniest flotsam and jetsam of nature, and glue.
Starting in the 1830s, commercial demand for slides prepared with specimens such as insect scales, spines, and microscopic organisms skyrocketed as professionals and amateurs grew deeply interested in studying the microcosm. Diatoms, in particular, were a favored medium. These single-cell algae protected by