26 Book of Engineering 



But perhaps the strangest touch of all 

 is found at an intermediate point where a 

 clever device is employed to sample the 

 coal. The samples are taken as desired 

 and go to the laboratory where the usual 

 analytical tests are made to determine 

 whether the fuel is the best that can be 

 supplied for the pulverisers. 



Another great advantage of the riverside 

 situation of the huge power station is the 

 fact that water does not have to be paid 

 for from any waterworks; this is an expen- 

 sive item when something like a constant 

 stream, running into millions of gallons a 

 day, is a prime need of the boilers and 

 condensers. 



It is no light task pumping up a stream 

 which would fill continuously a pipe with 

 a diameter of eight feet. In addition, 

 something has to be done to this water 

 for the sake of the boilers, which object 

 strongly to any suspended matter in their 

 supply. Here again the scientist comes 

 to the aid of the engineer. The latter has 

 erected and equipped a small building in 



