734 POPULAR SCIENCE MONTHLY. 



To give an idea of how near to New York city work of this kind is 

 being done, we may mention a few installations. 



There is one at Springfield, Massachusetts, where about nine 

 hundred horse power is transmitted to a distance of over six and a 

 half miles; one at Bondsville, Massachusetts, having a capacity of 

 about thirteen hundred horse power; and another at Fitchburg, 

 Massachusetts, of about four hundred horse power. In this latter 

 plant the distance of transmission is only two and a half miles, but 

 as an offset to it, in distance as well as amount of power, may be 

 mentioned a plant in Quebec, Canada, where over two thousand 

 horse power is transmitted eight miles. At Concord, New Hamp- 

 shire, there is an installation of several thousand horse power capa- 

 city, which is transmitted to a distance of Hve miles. 



At Hartford, Connecticut, there is a plant of about fifteen hun- 

 dred horse power, which is transmitted a distance of eleven miles; 

 at Baltic, Connecticut, about fourteen hundred horse power, and in 

 several places in the New England States, installations ranging from 

 two hundred to one thousand horse power can be found. At Hook- 

 set, New Hampshire, there is a plant of three thousand horse power, 

 which is transmitted about eleven miles. In the State of New York 

 there are plants at Gouverneur, Canandaigua, Tonawanda, and many 

 other places. 



The plant at Baltic, Connecticut, furnishes power to operate one 

 of the Ponemah mills at Taftville, about four miles and a half dis- 

 tant. The interior of this mill is shown in the illustration on page 

 731. In addition to operating this mill it furnishes power to run the 

 Norwich street railway. 



The Ponemah mills, two in number, were originally operated by 

 three turbine wheels and two steam engines, the water power not 

 being sufficient at all times of the year to meet the requirements. 

 In 1892 the Norwich Street Railway Company was changed from 

 horse to electric, and made a contract with the Ponemah Company 

 to furnish the power. The road, which started in a small way, soon 

 increased, and the extra load proved too much for the three turbines 

 and the two engines, located at the mills, to carry. It was then de- 

 cided to develop and utilize the water-power privileges owned by 

 the Ponemah Company some distance up the Shetucket River, and 

 transmit it by means of electricity to the mills and the railway. The 

 old dam was enlarged, and three turbine wheels, having a combined 

 capacity of nearly two thousand horse power, were installed. These 

 are belted to a line shaft from which the electric generators are 

 driven. At the end of the line the current is used to operate one of 

 the mills, to furnish the necessary light, and to operate the railway 

 already referred to, and, in addition to this, two locomotives used to 



