Posrriox or Trix-Bats.: Lat. 31° 14° 7" N.; Long. 121" 29 103" B. or 8h. 6m. 56,1200. E. of Greenwich.
observed at Sicawei Olvervatory at 4 pin, and reduced to Av" and to mean scale READING OF THE BAROMETER.—At4 p.m. signals indicating the Barometer readi will be given in inches ana tenths of an inch by omitting the 3 of 30 and 2 of 29 or Examples:—025 30.25; 904=20.94; 898 =28.98.
Locat Tits—Shanghai moan time is reckoned from the 120th meridian 8h. Om. Once. East of Greenwich.
Time BAtL.—The signal ina ball hoisted at the Semaphore, which is in connexion with the Sicawei Observatory; it is made daily as follows:
The ball is hoisted half-mast at 11h. 45m. a.mm., to the masthead at 11b. 50m. a.m., and drops for the first time at 11h, 55m. Shanghai moan time. The ball is immediately hoisted again to the masthead and drops a second time at noon.
If from whatever cause the title ball fails to drop, or drops at the wrong time, the numeral flag No. 0 will be hoisted at the masthead for one minute, and he noon signal will be tried. If the noon signal should also fail, the same flag will be again Point simultaneously with the Sting of a gu.
A time ball is also dropped st noon from the Customs' signal tower at Pootung In addition to the signal given by the Time-Ball at neon. the exact China. ost time is given every night by the extinction of thy four white ligh's of the time-signal Tower or. the French Bund The lights a e shown about 2 minutes before the ft extinction.
Tin, if the letextinction: 8 88 0,0 'Time of the 4th extine'ion aod 8 58 00 " they 8 57 00 In cave of error or failure, a red light is shown, or preferably the' two white the yard arm are lighted up during a few seconds to anool the wrong signal. tanals are worked directly from Ricawai Observatory by
Text read from the printed page and cleaned; old type leaves the occasional error.