22 



PRESIDENTIAL ADKkE^S SECTION A. 



The division of tlu- total cui^ine-power of the United King- 

 dom amongst different inchistries and different types of engines 

 is shown graphically in Fig. i, taken from a paper read in 1914 

 by E. G. Hiller before the Manchester Association of Engineers. 



TOTAL ENGINE POWER IN THE UNITED KINGDOM IN 1907 

 DIWSIBI Of 10^78475 IKPflMOWCSr MXBTRIO ttVCION OF I057B475 IHP ftMONCST WBIOUS KMB Of POft' 



iBON & STEEt 



ENGINEERING & 



SHIPBUILDING TRADES 



'HP 2 ^27 aai 



dfe^ 



riLITY SERVICE 



iUPPLV OF ELeCTPCJ 

 GM HATER 



I.892.B40 





LUliCl 0WM t lyil II P 



fi>x.y n> ctrM 



STEAM 



aOlUERS 



& ENGINES 



HP 9 6«9,7I0 



RECIPROCATING 



STEAM 



ENGINES 



IHP s.iis.eis 



fNT£P7jAi_ C0U6USTCN CNCWCS 

 'ilS.ClL.fc IMP C60.i77 

 HtlTlMI PimFB IMP IIT^aTZ 



Fig. I. 



Dugald Clerk has estimated the total ])ower of the world 

 generated from coal alone as : — 



\\'orld's Power from Coal. 



II. p. 



World's factories 60,000,000 



World's locomotives 19,000,000 



W^orld's ships — 



Mercantile marine 10,000,000 



Warships 13,000,000 



Total 102,000,000 



It is a painfnl travesty of modern civilisation to note that 

 the warships of the world absorb 30 per cent, more power than 

 the peaceful commerce carriers. 



Coming to South Africa, the latest returns available are 

 those collected in 1913. Details are given in the following table 

 for each Province and for the power requirements of gold, dia- 

 mond and coal-nn'ning, base minerals, and industries. 



It will be seen that as regards steam, gas, and oil power, 

 the requirements of the Transvaal are 80 per cent, of those of 

 the Union. The returns from the Cape are probably not com- 

 plete, as this was the first occasion on which they were made in 

 that Province. 



Solar Porver. — It will be seen that i)ractically all oin- avail- 

 able energy has its source in the sun. This fact, and a know- 

 ledge of the enormous amount of heat energy stored up in the 

 sun, has provided one of the most fa.scinating problems of 



