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1880ref. 42401London Harrison and Sons 1880. 4to. No wrappers as extracted from "Philosophical Transactions" Vol. 171 - Part II. Pp. 713-891. A few textilustr. Clean and fine. First printing of a main work by the "Father of Geophysics" in which he set up the hypothesis that the results from his earlier investigations on the relations between the tidal frictions on the earth and the motion of the moon away from the earth could be used to explain the formation of satellites of the other planets and their movements in relation to the sun. In DSB it is called "a monumental paper"."Darwin's most significant contribution to the history of science lies in his pioneering work in the application of detailled dynamical analysis to cosmological and geological problems. That many of his conclusions are now out of date should in no way diminish the historical interest in his experiments nor the importent service thet he rendered cosmogony by the example he gave of putting various hypotheses to the test of actual calculations. Darwin's method remains a milestone in the development of cosmogony and subsequent investigators have favored it over the merely qualitative arguments prevalent until that time."DSB. unknown
1734ref. 50434Dresden et Leipzig Frederik Hekelius 1734. Folio. Contemp. full mottled calf. Upper half of spine rebacked. Raised bands. Lower part of spine gilt. A crack to leather at lower part of fronthinge cover not loose. Engraved portrait. 16452 pp. and 28 engraved plates on 26 sheets. A dampstain in upper part of inner margins throughout otherwise clean and wide-margined. The plates with some browning. Scarce first edition of Swedenborg's main scientific work. The volume also form part one of his "Opera Philosophica et Mineralia"."In his Principia rerum naturalium Leipzig 1734 probably conceived as a counterpart to Newton’s Principia he sought a comprehensive physical explanation of the world based on mathematical and mechanical principles. While remaining faithful to the general principles of Cartesian natural philosophy which he had learned while studying at Uppsala Swedenborg elaborated upon them. According to his cosmogony the physical reality has developed from the mathematical point which was an entity between infinite and finite. Through a vortical movement implanted on the point a series of material particles developed the "first finiata "the second finita"and so on that eventually led to the cosmos in its present state. In contrast to Descartes Swedenborg believed that the planets had developed from the chaotic solar mass through expansion of its surrounding shell which finally joined to form a belt along the equatorial plane of the sun. It then exploded forming the planets and the satellites. Although the basic construction of Swedenborg’s thought heralded the later planetary theories of Buffon Kant and Laplace there is nothing to indicate that it exerted any direct influence on posterity." DSB.In 1738 Swedenborg's magnum opus was placed on the "Index Librorum Prohibitorum". hardcover
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