(London, Bulwer and Co., 1806). Large 4to. Without wrappers as extracted from ""Philosophical Transactions of the Royal Society of London."" Year 1806-Part II. Herschel's memoir pp. 455-466 a. 1 engraved plate. A brownspot in inner lower margin on the 3 first leaves. Some brownspots to the plate.
Reference : 49833
First appearance of Herschel's last paper on Saturn and its ring. He determined Saturns period of rotation and he discovered two more inner satellites. One of these, Iapetus, he found to perform its rotation, but he believed, wrongly, that the rings were solid.
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(London, Bulwer and Co., 1806). Large 4to. Without wrappers as extracted from ""Philosophical Transactions of the Royal Society of London."" Year 1806-Part II. Herschel's memoir pp. 455-466 a. 1 engraved plate.
First appearance of Herschel's last paper on Saturn and its ring. He determined Saturns period of rotation and he discovered two more inner satellites. One of these, Iapetus, he found to perform its rotation, but he believed, wrongly, that the rings were solid.