The Yulongsi Formation is a palaeontological formation located at Qujing, Yunnan, South China. The formation represents the Late Silurian period (Pridoli) of China.
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“It is because the body is a machine that education is possible. Education is the formation of habits, a superinducing of an artificial organisation upon the natural organisation of the body.”
—Thomas Henry Huxley (1825–1895)