4-O New Theories of the Great Forces. 



2d. Motions and frictions of every kind ; * 

 the motions of the waters of the earth, the 

 great oceans, with their rolling tides sweep- 

 ing the whole circumference of the earth 

 twice in twenty-four hours, at a speed of one 

 thousand miles per hour ; with its frictions 

 upon itself, the bottom, and the shores ; its 

 great storms lashing it into fury, and its gen- 

 tler motions from lesser winds ; also the mo- 

 tions of all seas, rivers, and rain-falls. 



3d. So all motions of the air, in form of 

 hurricanes, lesser winds, or zephyrs ; tear- 

 ing their way through forests, and hills, and 

 through space ; or causing gentlest flutter ol 

 leaflet. We have witnessed their goings 

 forth, but have neglected to calculate their 

 mission. 



4th. All chemical actions. 



5th. All combustions. 



6th. All evaporations. 



The earth is thus elaborating in all her 

 gigantic processes, the materials and forces, 

 which she furnishes in the great interchange. 

 How strangely have these great sources of 



* In the motions of the spheres through space, unlike all other 

 forms of motion, there is no element of resistance. This form of 

 motion is therefore incapable of developing vis viva. 



