8 



most important factories and mills in the country are using it 

 daily, or rather nightly, in their regular business, and with the 

 most satisfactory results both as to economy and facility. 



About nine-tenths of the Electric Lights actually purchased 

 and in use to-day, in this countiy, are Brush Lights, and it is 

 difficult to keep up with orders for the sizes of machines most 

 in demand. 



THE TELEGRAPH SUPPLY COMPANY 



Have the exclusive control of the manufacture and sale of this 

 Apparatus, and their factory, occupying five floors 50x100, with 

 two engines, two boilers, and a full outfit of modern machinery, 

 enables them to carry on all branches of the manufacture, from 

 the crude material to the completed machines, in the most per- 

 fect manner. 



During the dark hours of the day and in the early evening, 

 the factory and office are illuminated exclusively by the Brush 

 Light, and all other lights dispensed with. The building is 

 thus made conspicuous by its brilliant illumination, and attracts 

 crowds, not of idlers only, but of substantial business men, to 

 see a practical illustration of its value. 



The actual cost to the company for the illumination of three 

 floors, including the office, does not exceed ten cents per hour, 

 and their gas bills, for a smaller amount of light, would be not 

 less than one dollar per hour. 



