OF SIR ISAAC PRINCIPIA. BY HENRY LORD BROUGHAM, F.R.S. MEMBER OF THE NATIONAL INSTITUTE OF FRANCE, AND OF THE ROYAL ACADEMY OF NAPLES; AND E. J. ROUTH, B.A. FELLOW OF ST. PETER'S COLLEGE, CAMBRIDGE. LONDON: LONGMAN, BROWN, GREEN, AND LONGMANS; C. KNIGHT EDINBURGH: A. AND C. BLACK; GLASGOW: R. GRIFFIN. 1855. 187.0.10. ΤΟ PROFESSOR THE BARON PLANA, OF TURIN, THIS WORK IS INSCRIBED, AS A SMALL TOKEN OF RESPECT FOR THE GREAT TALENTS AND PROFOUND LEARNING OF THAT EMINENT MATHEMATICIAN. CONTENTS. Division of the work into Three Books, 1.- State of Physical Astronomy and Dynamics before Sir Isaac ples - Logarithms, ib. Fluxions, ib. - - - -- - - History of this Cal- Bernouilli, Emerson, 7. Copernican Theory, ib. Galileo's discoveries, 8. Kepler's laws, ib. Huygens, ib. Borelli, ib. Hooke, ib. Halley, ib. Peculiar maturity of the New- tonian theory as at first delivered, 10. Nothing since sup- plied to its demonstration which Sir Isaac Newton originally had left imperfect, ib. note. Three services beside the disco- very of Gravitation, performed by this work to science, ib. Prodigious merit, even if gravitation were struck out of it, 11. - Reception of the Principia slow even in England, ib. - Definitions of the Principia, 14. Two remarks on them, ib. - |