On every evening, except when the moon shines, Ann Arbor is batlied in the glare of electric lights. So well diffused is the lightihat there is hardly a dark street in the city. Eighty lampe of 2,000 candle-power each, are used They are suspended in the center of the street, sometimes one, sometimes two blocks apart. The total cost of the system to the city is 86,480 a year - a remarkably small aroount when the results are taken into consideration. All the electric lights in the city, inoluding private lamps, are the property of the Ann Arbor Thomson-Heuston Light Cornpany. This company was organized about fiye years ago, and lights were turned on in the early part of 1887. The works occupy a brick building on Washington-st., just beyond the track of the Toledo, Ann Arbor & North Michigan railroad. The value of the property now owned by the company is 850,000. The equipment of the works equals that of any similar establishment in the state. There are three large boilers - one of the Heine make, with 150 horsepower - and two Ball engines with 100 and 150 horse-power respectively. Three are and one incandescent dynamo genérate electricity. They are of the most modern makes. The company furnishes steam for the electric street railway, which uses two dynamos and two engines. These are to be found in a wing of the original building, which has recently been erected. From the street railway circuit a liniited number of electric lights are kept running in the day time. Thirty-five are lights of 1,200 candlepower, are used by private citizens in . various parts of the city. When tempered by glass globes they are very good illuminators. The number of incandescent lights of sixteen candle-power now exceeds 885. Many residences, including the fine structure erected by Railway Commissioner Whitman, are supplied with these lights. The new University Hospital also will have them. The officers of the Electric Light Company are : President, J. L. Hudson, Detroit ; vice president, W. F. Davidson, Port Huron ; secretary and treasurer, A. L. Noble, of Ann Arbor ; superintendent, W. P. Stevens, formerly of Hillsdale. The company is composed of energetic business men, who are ever on the alert for the modern improvements. Their patronage is daily growing.