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THE WINDS. 



A]^ ESSAY 



IN ILLUSTRATION OF THE NEW PRINCIPLES OF NATURAL 

 PHILOSOPHY. 



{Forming Clmpter III. of The New Prikciples op Natural Philosophy.) 



ANALYSIS OF CONTENTS. 



PART I. 

 THE ACTION OP SOLAR HEAT. 



1. The circulation it tends to cause. 



2. The Trade Winds accord with that action. 



3. The Anti-Trades do not. 



PART II. 

 THE ACTION OP SOLAR AND LUNAR GRAVITATION. 



1. The circulation it tends to cause. 



2. The Trades and Anti-Trades accord with that action. 



3. But that action is intermittent/, and the Trades and Anti-Trades are too 



constant to be dependent on it. 



PART III. 

 THE MERIDIONAL ACTION OP THE EARTH'S ROTATION. 



1. The cu-culation it tends to cause. 



2. This forms a constant and equable cause for the Trades and Anti-Trades. 



PART IV. 

 IDENTICAL ACTION OP CENTRIFUGAL FORCE AND GRAVITATION. 



1. Solar and Lunar gravitation have the same current- creating action as the 



centrifugal force resulting from the earth's rotation. And their gravitation 

 is a part of the centrifugal force which causes the meridional circulation 

 thus far considered. 



2. The action of Solar heat causes the Anti-Trades to be mure inconstant than 



the Trades. 



PART V. 

 THE ACTION OP THE EARTH'S ROTATION. THE NORMAL CIRCULATION. 



1 . Effect of change of latitude. 



2. This does not explain all the existing latitudinal circulation. 



3. Nor the westward course of the Upper Trades diverging from the equator. 



4. The earth's rotation tends to cause a latitudinal circulation. 



5. This explains the westerly winds of the temperate, and the easterly winds 



of the equatorial regions. 



6. The three predominating circulating forces created by the earth's rotation. 



7. The combined action of these forces tends to cause what are known to be the 



main features of the existing circulation. 



