插图展示了作者描述的不同类型的云。 a,a,代表卷云的不同外观:b,规则的积云:c,日落时分占据山谷的层云,中间应该有一块较高的地方,上面有一个弧形的漩涡。(Illustrations showing different types of clouds as described by the author. a,a, represents different appearances of the cirrus: b, a regular cumulus: c, a stratus occupying a valley at sun-set, in the midst of which is supposed a spot of higher ground, wi)未知艺术家 |
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日期不详 · engraving
· 图片ID: 1453011
British Library, London, UK / Bridgeman Images |
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