62 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



NOETH AMERICA. 



St.Jbh?i^s [N^ew Brunswick). Time-ball daily (except Sun- 

 day) at one o'clock, by a chronometer which is compared 

 with a clock rated by a transit instrument. 



Quebec. A time-ball is dropped for the shipping at 1^^, 

 and a time-gun fired in the city for public convenience at 

 noon. 



Kingston {Ccmada). Time is given to the city and to 

 the shipping daily from the observatory. 



Ontario. For the past four years the observatory has 

 struck its time-signals on the fire-alarm bells. 



Pittsburgh. The City-hall clock is controlled from the 

 Alleghany Observatory, and the fire-alarm bells are struck 

 at noon and at every third hour. Time is furnished to the 

 Pennsylvania Railway. 



Cincinnati. The clock on the City-hall is controlled by 

 electric signals every two seconds, and the fire-alarm bells 

 are struck at noon. 



Cambridge and Boston. For some years the Harvard 

 College Observatory has controlled clocks in Boston, and 

 furnished standard time to some of the railways. 



Albany. It is understood that the Dudley Observatory 

 furnishes time to the city of Albany and to the Hudson 

 liiver Railway. 



Chicago. Time is given to the city from the Dearborn 

 Observatory. 



Washington. A time-ball is dropped daily (Sundays ex- 

 cepted) at noon. Clocks in the city are controlled (on 

 Jones's system) at the Navy Department, State Department, 

 Treasury Department, Signal-office, and one is proposed for 

 erection at the Western Union Telegraph Office. Daily (ex- 

 cept Sundays) at noon a signal is sent from the observatory 

 to the Washington office of the Western Union Telegraph 

 Company, and by them distributed over such of their wires 

 as may be unemployed. Practically this signal alioays 

 reaches Philadelphia and New York, and Chicago, Cincin- 

 nati, and St. Louis very often. The fire-alarm bells are 

 struck at 7 A.M., 12 M., and 6 P.M. 



