[mukphv] 



THE ICE QUESTION 



171 



Up to this time no one, so far as 1 could learn, had ever attempted 

 to heat the apparatus so that ice would neither form npon it nor stick 

 to it if it floated along. Suggestions which embodied the heating of the 

 water in a stream or the melting of ice were always treated as prepos- 

 terous by hydraulic engineers and their attitude is readily accounted for 

 by an examination of some figures in connection with these proposals. 



These figures are illustrated by the three cubes in Fig. 9 and by the 



J31 



Imc. 9. 



three rectangles in Fig. 10. ''A" represents the capacity of a 3,000 

 horse power station. " B " represents 49 similar stations. " C " repre- 

 sents 7,000 stations as large as " A ". 



If it were proposed to raise the temperature of the water passing 

 through station " a " in Fig. 9 one degree Fahr. the operation would 

 require all the output of station '* b/' i.e. 49 times as much energy as 

 " a " can produce. 



