158 THE CHANNEL AT NIGHT. 



INTERNAL SUPPLY OP AIK. 



and proceed to explain them in order, as I will now go on 

 to explain them to you. 



" The five principal kinds of bright light produced by 

 artificial means are, 



" 1. The Argand burner. 



" 2. The Bude Light. 



" 3. The Oxyhydrogen Light. 



" 4. The Magnesium Light. 



" 5. The Electric Light. 



"1. THE ARGAND BURNER. This I have already ex- 

 plained," continued Lawrence. " The solid made luminous 



