XIV CONTENTS. 



PAGE 



Natural heat may be taken as another argument that the law of 

 the laboratory is the law of nature 190 



A possible reason why there is evident heat in the rays of the 

 sun and none in the rays of the moon 191 



CHAP. IV. 



SEARCH AFTER A CENTRAL LAW IN THE PHENOMENA OF NATURAL 

 LIGHT. 



Natural light may be referred to the law which we named pro- 

 visionally the law of the laboratory . ... 192 



The law of the laboratory affords the only explanation of 

 natural light . 193 



Natural light may be taken as another argument that the law 

 of the laboratory is the law of nature . . . 193 



The Scriptural account of the creation appears to show that 

 light and motion are bound up in a common cause as they 

 are in the law of the laboratory 193 



A collateral inference that the creation of the earth was not 

 long antecedent to the creation of Adam *. . . . , . 193 



