CONTENTS. XV 



CHAP. V. 



SEAECH AFTER A CENTRAL LAW IN NATURAL CHEMICAL ACTIONS. 



PAGE 



These chemical actions may be referred to the law which was 

 named provisionally the law of the laboratory . . .195 



The law of the laboratory affords the only explanation of these 

 actions 195 



These actions may be taken as another argument that the law 

 of the laboratory is the law of nature . . . T "-. . 195 



CHAP. VI. 



SEAECH AFTER A CENTRAL LAW IN NATURAL MAGNETISM AND 

 ELECTRICITY. 



The phenomena of natural magnetism and electricity may 

 be referred to the law of the laboratory .... 196 



The law of the laboratory affords the only explanation of these 

 phenomena . . . 196 



These phenomena may be taken as other arguments that the 

 law of the laboratory is the law of nature .... 196 



CONCLUSION . . 197 



