PRIMARY POWER AND ITS USES 



27 



TABLE VIII 

 POWER USED IN MANUFACTURING INDUSTRIES 



100 

 90 

 80 

 70 

 60 



4 



50< 

 40 



30 

 80 



in 



Water Powe 



1900 



1904 



Year 



1908 



1912 



F IG 7. Relation of Steam, Water and Gas Power. 



The curves in Fig. 7 show the approximate percentage relation 

 that steam, water and gas power bear to the total in the three 

 principal industries Central Stations, Electric Railways and 

 Manufacturing. 



