Charles S. (Charles Sumner) Boyer

Born in 1856 and active in the Philadelphia scientific community, Charles Sumner Boyer was an American diatomist — a specialist in diatoms, the microscopic algae with beautifully patterned silica shells. Records from the Academy of Natural Sciences note that he was elected to the academy in February 1892 and was active in the Leidy Microscopical Society.

Boyer is chiefly associated with The Diatomaceæ of Philadelphia and Vicinity, published in 1916. Biodiversity Heritage Library records describe it as a substantial work illustrated with seven hundred drawings by Boyer himself, showing both his scientific focus and his skill as a visual documenter.

Later references to his career describe him as a prominent U.S. diatomist, and his publications span the years 1891 to 1927. He died in 1928, leaving behind a body of work that connected microscopy, taxonomy, and local natural history.