iv Contents, 



CHAPTER PAGE 



XXII. NIAGARA FALLS POWER INTRODUC- 

 TION 186 



XXIII. NIAGARA FALLS POWER APPLI- 



ANCES 190 



XXIV. NIAGARA FALLS POWER APPLI- 



ANCES 109 



XXV. ELECTRICAL PRODUCTS CARBORUN- 

 DUM 209 



XXVI. ELECTRICAL PRODUCTS BLEACHING- 



POWDER 218 



XXVII. ELECTRICAL PRODUCTS ALUMINUM. 223 

 XXVIII. ELECTRICAL PRODUCTS CALCIUM 



CARBIDE 228 



XXIX. THE NEW EBA.. . 234 



