Jean-Étienne Guettard

Jean-Étienne Guettard (22 September 1715 – 7 January 1786), French naturalist and mineralogist, was born at Étampes, near Paris.

In boyhood, he gained a knowledge of plants from his grandfather, who was an apothecary, and later he qualified as a doctor in medicine. Pursuing the study of botany in various parts of France and other countries, he began to take notice of the relation between the distribution of plants and the soils and subsoils. In this way his attention came to be directed to minerals and rocks.

单词	Guettard
释义	Guettard 英语百科 Jean-Étienne Guettard Jean-Étienne Guettard (22 September 1715 – 7 January 1786), French naturalist and mineralogist, was born at Étampes, near Paris. In boyhood, he gained a knowledge of plants from his grandfather, who was an apothecary, and later he qualified as a doctor in medicine. Pursuing the study of botany in various parts of France and other countries, he began to take notice of the relation between the distribution of plants and the soils and subsoils. In this way his attention came to be directed to minerals and rocks.
随便看	powder squeezer powder squib powder sretch powder starter powder start system powder stearic acid powder stick powder stock powder store powder stores powder strip powder structure determination Powder sugar powder suppressant powder surface modification powder suspension powder taken cold powder technique powder techniques powder technology powder test powder time fuse powder train powder train time fuze powder treatment