: Notes and Queries Number 220 January 14 1854 A Medium of Inter-communication for Literary Men Artists Antiquaries Genealogists etc. by Various - Questions and answers Periodicals Notes and Queries

@FreeBooks

Posted in: #FreeBooks #FreeBooksIndia #FreeBooksApp #gg

Vote Up Vote Down   0 Reactions

Login to give Reaction!

. PAGE INTRODUCTION. 1

The bases of modern astronomy. Their late formation 18 Instruments and measures used by ancient astronomers 19 Weights and measures sought out by modern astronomers 20 Means employed to discover the density of the earth. Measuring by means of plummets not sufficiently exact 20 Measurements with torsion and chemical balances more accurate 21 Sir George B. Airy's theory, and experiments at the Harton colliery 22 Results of experiments not reliable. Theory contrary to the Law of Attraction 23 Proof by arithmetical calculation of its error 24 Difficulties in comparing beats of pendulums at top and bottom of a mine 26 The theory upheld by text-books without proper examination 27 Of a particle of matter within the shell of a hollow sphere. Not exempt from the law of Attraction 28 A particle so situated confronted with the law of the inverse square ofdistance from an attracting body. Remarks thereon 29 It is not true that the attraction of a spherical shell is "zero" for a particle of matter within it 31

The moon cannot have even an imaginary rotation on its axis, but is generally believed to have. Quotations to prove this 33 Proofs that there can be no rotation. The most confused assertion that there is rotation shown to be without foundations 35 A gin horse does not rotate on its axis in its revolution 37 A gin horse, or a substitute, driven instead of being a driver 38 Results of the wooden horse being driven by the mill 38 The same results produced by the revolution of the moon. Centrifugal force sufficient to drive air and water away from our side of the moon 39 That force not sufficient to drive them away from its other side 40 No one seems ever to have thought of centrifugal force in connection with air and water on the moon 41 Near approach made by Hansen to this notion 41 Far-fetched reasons given for the non-appearance of air and water 42 The moon must have both on the far-off hemisphere 44 Proofs of this deduced from its appearance at change 44 Where the evidences of this may be seen if looked for at the right place. The centrifugal force shown to be insufficient to drive off even air, and less water, altogether from the moon 45 The moon must have rotated on its axis at one period of its existence 47 The want of polar compression no proof to the contrary 48 Want of proper study gives rise to extravagant conceptions, jumping at conclusions, and formation of "curious theories" 48

Remarks on some of the principal cosmogonies. Ancient notions 49 The Nebular hypothesis of Laplace. Early opinions on it. Received into favour. Again condemned as erroneous 50 Defects attributed to it as fatal. New cosmogonies advanced 51 Dr. Croll's collision, or impact, theory discussed 53 Dr. Braun's cosmogony examined 59 M. Faye's "Origine du Monde" defined 61 Shown to be without proper foundation, confused, and in some parts contradictory 65 Reference to other hypotheses not noticed. All more or less only variations on the nebular hypothesis 70 Necessity for more particular examination into it 71

Preliminaries to analysis of the Nebular hypothesis 72 Definition of the hypothesis 73 Elements of solar system. Tables of dimensions and masses 75 Explanation of tables and density of Saturn 78 Volume, density and mass of Saturn's rings, general remarks about them, and satellites to be made from them 79 Future of Saturn's rings 79 Notions about Saturn's satellites and their masses 80 Nature of rings seemingly not well understood 81 Masses given to the satellites of Uranus and Neptune. Explanations of 81 Volumes of the members of the solar system at density of water 82

Analysis continued. Excessive heat of nebula involved condensation only at the surface. Proof that this was Laplace's idea 108 Noteworthy that some astronomers still believe in excessive heat 109 Interdependence of temperature and pressure in gases and vapours. Collisions of atoms the source of heat 110 Conditions on which a nebula can be incandescent. Sir Robert Ball 110 No proper explanation yet given of incandescent or glowing gas 112 How matter was thrown off, or abandoned by the Jovian nebula 115 Division into rings of matter thrown off determined during contraction 116 How direct rotary motion was determined by friction and collisions of particles 117 Saturn's rings going through the same process. Left to show process 118 Form gradually assumed by nebulae. Cause of Saturn's square-shouldered appearance 120 A lens-shaped nebula could not be formed by surface condensation 120 Retrograde rotary motion of Neptune and Uranus, and revolution of their satellites recognised by Laplace as possible 121 Satellites of Mars. Rapid revolution of inner one may be accounted for 123 Laplace's proportion of 4000 millions not reduced but enormously increased by discoveries of this century 124

Inquiry into the Interior Construction of the Earth. What is really known of the exterior or surface 142 What is known of the interior 143 Little to be learned from Geology, which reaches very few miles down g to Britain. 1 vol. 8vo. Second Edition, with an entirely new set of Plates, price 10s. 6d.

ANCIENT COINS of CITIES and Princes, Geographically arranged and described, containing the Coins of Hispania, Gallia, and Britannia, with Plates of several hundred examples. 1 vol. 8vo., price 18s.

AN INTRODUCTION TO THE STUDY of ANCIENT and MODERN COINS. In 1 vol. fcp. 8vo., with numerous Wood Engravings from the original Coins price 6s. 6d. cloth.

:--Section 1. Origin of Coinage--Greek Regal Coins. 2. Greek Civic Coins. 3. Greek Imperial Coins. 4. Origin of Roman Coinage--Consular Coins. 5. Roman Imperial Coins. 6. Roman British Coins. 7. Ancient British Coinage. 8. Anglo-Saxon Coinage. 9. English Coinage from the Conquest. 10. Scotch Coinage. 11. Coinage of Ireland. 12. Anglo-Gallic Coins. 13. Continental Money in the Middle Ages. 14. Various Representatives of Coinage. 15. Forgeries in Ancient and Modern Times. 16. Table of Prices of English Coins realised at Public Sales.

TRADESMEN'S TOKENS, struck in London and its Vicinity, from the year 1648 to 1672 inclusive. Described from the Originals in the Collection of the British Museum, &c. 15s.

REMAINS OF PAGAN SAXONDOM, principally from Tumuli in England. Publishing in 4to., in Numbers, at 2s. 6d. With coloured Plates.

Free books android app tbrJar TBR JAR Read Free books online gutenberg

(0)

Login to post a comment!