2Q 



PRESIDENTIAL ADDRESS SECTION A. 



A philosophical deduction of great importance may, as shown 

 by Lineham, be deduced from a consideration of this diagram. 



In wire rope solid parts are transmitted, and the efficiency 

 falls off rapidly ; hydraulics transmit liquid parts, and the effi- 

 ciency is better maintained ; pneumatics transmit gaseous part?, 

 and the efficiency is considerably better ; but the best results by a 

 great lead is obtained by electricity, where a total over-all effi- 

 ciency of 70 per cent, has been proved over a distance of 100 

 miles. 



COMPARISON OF EFFICIENCIES IN LONG DISTANCE 

 TRANSMISSION. 



(After Beringf.r.) 



100 

 90 

 80 

 70 

 60 

 50 

 40 

 30 

 20 



6 

 Milt 



8 10 12 



transmitted. 



16 



18 



20 



These facts indicate the electric current to be either vibra- 

 tions of the ether or the passage of a highly attenuated substance. 



We have roughly sketched the progress made in the means 

 and methods for the conversion of heat and kinetic energy into 

 electrical energy, and it may now be interesting to take some note 

 as to how the energy so converted is being used. Electricity 

 from central stations was first used for lighting, but from the 

 general trend of development it would appear that much more 

 energy will eventually be used for either heating, power or 

 electro-chemical purposes than for lighting. Much of the enor 

 mous power now being developed from waterfalls is being used 

 for the production of nitrous compounds from the atmosphere, 



