Die Tier- und Pflanzenwelt des Süsswassers. Zweiter Band.

A German schoolteacher and naturalist, he spent decades in Vegesack while building a reputation as a careful observer of mollusks and freshwater life. His work bridges local teaching, field science, and the quieter world of 19th- and early-20th-century natural history.

A 19th-century German naturalist who spent years studying freshwater snails and fossil mollusks, he helped make malacology more accessible through careful research and practical reference works.

A German educator and biologist, he moved between philosophy, school administration, and close study of mites and other small creatures. His published work shows a lively mind drawn to both scholarship and the natural world.

A little-known contributor to early freshwater biology, this author appears in a multi-author scientific work on the animal and plant life of inland waters. Very little biographical information is readily available, which makes the surviving publication record especially interesting.

Arthur Seligo

1859–1932

A pioneering German natural scientist, fisheries expert, and science writer, he helped bring the hidden life of lakes and freshwater plankton to a wider public. His books combine careful observation with a strong interest in how aquatic ecosystems work.

Friedrich Zschokke

1860–1936

A Swiss zoologist and parasitologist, he spent decades studying freshwater life and helped build zoology and comparative anatomy at the University of Basel. Born into the well-known Zschokke family, he is remembered for careful scientific work rather than literary fame.