Limnology zoologist) and Einar Naumann (a Swedish botanist) co-founded the International Society of Limnology (SIL, from Societas Internationalis Limnologiae). Forel's original definition of limnology, "the oceanography of lakes", was expanded to encompass the study of all inland waters, and influenced Benedykt Dybowski's work on Lake Baikal. Prominent early American limnologists included G. Evelyn Hutchinson, Ed Deevey, E. A. Birge, and C. Juday. Physical properties of aquatic ecosystems are determined by a combination of heat, currents, waves and other seasonal distributions of environmental conditions. The morphometry of a body of water depends on the type of feature (such as a lake, river,
The Study of the Negro Problems Negro and American in a white American world, they should be constantly mindful of this while they discern how they fit in as citizens moving through a racially disconnected New World based on the outward perceptions of them from the white majority race. The focus of "The Study of the Negro Problems" is on the means of law enforcement used to separate blacks from their white counterparts and how social forces, as responses to the African slaves’ introduction into America, forced these laws onto the slaves and their ancestors. The Study of the Negro Problems The Study of the Negro