Shen Kuo , Wade-Giles romanization Shen K’uo , (born 1031, Qiantang [now Hangzhou , Zhejiang province], China—died 1095, Jingkou [now Zhenjiang , Jiangsu province]), Chinese astronomer, mathematician, and high official whose famous work Mengxi bitan (“Brush Talks from Dream Brook” [Dream Brook was the name of his estate in Jingkou]) contains the first reference to the magnetic compass , the first description of movable type , and a fairly accurate explanation of the origin of fossils . The Mengxi bitan also contains Shen’s observations on such varied subjects as mathematics , astronomy , atmospheric phenomena, cartography , optics , and medicine . Shen produced a number of works, including commentaries on the Confucian Classics , atlases, diplomatic reports, and a variety of monographs. His Mengxi bitan was written relatively late in life, after he had been removed from office on a trumped-up charge and banished after troops under his titular command suffered a