Limnology global inland waters as part of the Earth System created a sub-discipline called global limnology. This approach considers the role of inland aquatic ecosystems in carbon cycling. Limnology is closely related to aquatic ecology and hydrobiology, which study aquatic organisms and their interactions with the abiotic (non-living) environment. While limnology has substantial overlap with freshwater-focused disciplines (e.g., freshwater biology), it also includes the study of inland salt lakes. The term limnology was coined by François-Alphonse Forel (1841–1912) who established the field with his studies of Lake Geneva. Interest in the discipline rapidly expanded, and in 1922 August Thienemann (a German
By the Light of the Study Lamp endpages. The series drew interest again so subsequent volumes were updated and released, with spine symbols, until the publication of a new volume (already written and set for printing in 1945) in 1952; new volumes were released once a year. In 1962, the Dana Girls switched to cream or beige spined picture covers, and went out of print in late 1968. "By the Light of the Study Lamp" was allowed to go out of print at that time. By the Light of the Study Lamp By the Light of the Study Lamp is the first book in The Dana Girls