Tyrion asked him once, as he pulled a stopper from a skin.

Doubt and Doubthot2023-12-07 12:18:52 88 74


Tyrion asked him once, as he pulled a stopper from a skin.


Tyrion asked him once, as he pulled a stopper from a skin.


Tyrion asked him once, as he pulled a stopper from a skin.

The work of Johannes Hevelius--Halley and Hevelius--Halley's observation of the transit of Mercury, and his method of determining the parallax of the planets--Halley's observation of meteors--His inability to explain these bodies--The important work of James Bradley--Lacaille's measurement of the arc of the meridian--The determination of the question as to the exact shape of the earth--D'Alembert and his influence upon science- -Delambre's History of Astronomy--The astronomical work of Euler.


The work of William Herschel--His discovery of Uranus--His discovery that the stars are suns--His conception of the universe--His deduction that gravitation has caused the grouping of the heavenly bodies--The nebula, hypothesis, --Immanuel Kant's conception of the formation of the world--Defects in Kant's conception--Laplace's final solution of the problem--His explanation in detail--Change in the mental attitude of the world since Bruno--Asteroids and satellites--Discoveries of Olbers1--The mathematical calculations of Adams and Leverrier--The discovery of the inner ring of Saturn--Clerk Maxwell's paper on the stability of Saturn's rings--Helmholtz's conception of the action of tidal friction--Professor G. H. Darwin's estimate of the consequences of tidal action--Comets and meteors--Bredichin's cometary theory--The final solution of the structure of comets--Newcomb's estimate of the amount of cometary dust swept up daily by the earth--The fixed stars--John Herschel's studies of double stars--Fraunhofer's perfection of the refracting telescope--Bessel's measurement of the parallax of a star,--Henderson's measurements--Kirchhoff and Bunsen's perfection of the spectroscope--Wonderful revelations of the spectroscope--Lord Kelvin's estimate of the time that will be required for the earth to become completely cooled-- Alvan Clark's discovery of the companion star of Sirius-- The advent of the photographic film in astronomy--Dr. Huggins's studies of nebulae--Sir Norman Lockyer's "cosmogonic guess,"--Croll's pre-nebular theory.


William Smith and fossil shells--His discovery that fossil rocks are arranged in regular systems--Smith's inquiries taken up by Cuvier--His Ossements Fossiles containing the first description of hairy elephant--His contention that fossils represent extinct species only--Dr. Buckland's studies of English fossil-beds--Charles Lyell combats catastrophism, --Elaboration of his ideas with reference to the rotation of species--The establishment of the doctrine of uniformitarianism, --Darwin's Origin of Species--Fossil man--Dr. Falconer's visit to the fossil-beds in the valley of the Somme--Investigations of Prestwich and Sir John Evans--Discovery of the Neanderthal skull, --Cuvier's rejection of human fossils--The finding of prehistoric carving on ivory--The fossil-beds of America--Professor Marsh's paper on the fossil horses in America--The Warren mastodon, --The Java fossil, Pithecanthropus Erectus.



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