WOKKS BY THE SAME AUTHOR. 



PubUslied by Messrs. LONGMANS, GREEN, & CO. 



Demy 8vo. cloth, illustrated, 21«. 



THE NEW PRINCIPLES OF 



NATURAL PHILOSOPHY 



A Defence and Extension of the Principles established by the Author's 

 Treatise on Ocean Currents. 



TABLE OF CONTENTS. 



Chapter I. — Preliminary Remarks on How Little we Know and How we 

 Know it. 

 Abstract of an Address delivered on the opening of the Fifth Session of the 

 English Literary Society, April 26, 1880. Reprinted from the Report published 

 in the Buenos Ay res Herald. 



Chapter II. — Remarks on the Recent Oceanic Explorations and the Current- 

 Creating Action of Vis-InertijB in the Ocean. 

 Published in 1877. 



Chapter III. — The Winds and the Earth's Rotation. 



Published in 1877. 



Chapter IV. — The Winds and the Earth's Onward Motion. 



Published in 1877. 



Chapter V. — Replies to Critics of ' The Ocean.' 



Published in 1876. 



Chapter VI.— The Winds, Ocean Currents, and Tides, and what they Tell of the 

 System of the World. 



A Lecture delivered at Willis's Rooms, King Street, St. James's, November 3, 

 1877, as a Public Challenge to the Council of the Royal Society and the Scientitic 

 Staff of the ' Challenger ' Expedition. 



Chapter VII.— Second Challenge Lecture. 



Delivered at Willis's Rooms, December 20, 1877, in continuation of the above 

 subject. 



Chapter VIII. — The Gyroscope. 



Published with the First Edition of the ' Challenge Lectures,' in 1877. 



