74Q POPULAR SCIENCE MONTHLY. 



each generator is about six hundred horse power, its compactness is 

 also apparent. 



There are any number of other power-transmission plants in this 

 country, a description of which would prove interesting not only on 

 account of their magnitude, or the distance to which the power is 

 conveyed, but also on account of their revealing the vast amount 

 of engineering skill displayed in surmounting difficulties that have 

 been contended with; but the examples described in the foregoing 

 are sufficient to show the enormous strides that are being made in this 

 field, and yet the general public is almost wholly unaware that any- 

 thing is being done except in an experimental way. 



The electric transmission of power is not confined to this country 

 by any means; plants of very large proportions can be found in 

 almost every quarter of the civilized world, and in some places not 

 specially noted for their civilization. In Mexico there are several 

 installations, and no doubt there would be more if it were not for 

 the fact that there is a scarcity of large streams and rivers in that 

 country; therefore, although its mountainous conformation would 

 lead to the conclusion that waterfalls are numerous, as a matter of 

 fact those where the power available is sufficient to warrant its utili- 

 zation are very few. 



The principal installation in Mexico is at Pachuca, one of the 

 most important mining districts in the country. The power plant is 

 located at Regla, which is about twenty-three miles distant. The 

 capacity of the plant is over three thousand horse power. 



There are several plants in South American countries, quite a 

 number in Africa, in Australia, in Asiatic countries, and also in 

 Europe. The Jungfrau Mountain Railroad in Switzerland, which 

 has been called the trolley to heaven, will be operated by power de- 

 rived from the Black and White Lutschine Rivers, in Burglauenen 

 and Lauterbrunnen. This road, which is about finished, ascends to 

 one of the highest peaks of the Alps, one which heretofore has 

 only been accessible to those of sufficiently vigorous constitutions 

 to make the ascent on foot. 



The Geneva water power is utilized to operate electric railways, 

 electric lights, and to some extent for the development of power for 

 industrial purposes. The distance of transmission at this place is 

 about twenty miles. 



Other installations in Europe of importance that may be men- 

 tioned are Rome, Italy distance, about eighteen miles; amount of 

 power, two thousand horse power, which is being increased to nine 

 thousand; Davos, Switzerland; Schongeisung, Germany; Laufien to 

 Heilbronn, Germany; Zurich, Switzerland, and many others. 



The longest transmission ever undertaken was an experimental 



