NATURE'S MIRACLES- 



ELECTRICITY AND MAGNETISM. 



CHAPTER I. 



The writer has spent much of his time for 

 thirty-five years in the study of electricity 

 and in inventing appliances for purposes of 

 transmitting intelligence electrically between 

 distant points, and is perhaps more familiar 

 with the phenomena of electricity than with 

 those of any other branch of physics; yet he 

 finds it still the most difficult of all the natural 

 sciences to explain. To give any satisfactory 

 theory as to its place with and relation to 

 other forms of energy is a perplexing prob- 

 lem. 



IT is said that Lord Kelvin lately made the 

 statement that no advance had been made in 

 explaining the real nature of electricity for 

 fifty years. While thi- <tatement if he really 

 made it is rather broad, it mu>t be aeknowl- 



