Observatiom of fJw Trdnsit of Venus. 387 



December 7th, P, M., ut Western Union Building. 

 Reception of the Washington Time-Signals. 

 P. & F., M. T. Chronometer. Washington Signals. 



lost = 30 sec. = 11 or. 30.0 



lost = min. = 11 57 0.0 



lost = 30 sec. = 11 57 30.0 



12 12 13.7 = min. = 11 58 0.0 



lost = 30 sec. = 11 58 30.0 



lost = min. = 11 59 0.0 



12 13 43.6 = 30 sec. = 11 59 30.0 



12 14 13.6 = min. = 12 0.0 



December 7th, P. M., at the College: 



Negus, Sidereal. P. & F., Mean-Time. 



19 14 25.0 = 1 53 55.0 



19 20 6.0 = 1 59 35.0 



The Western Union time-signals sound the local time of the 

 New York City Hall. The assumed longitude of the City Hall 

 from Washington is — 12m. 10.47s. 



Mr. Hamblet, in charge of the system, gives the errors of his 

 clock and signals as follows: — 



December 5th, N. Y. City Hall, noon, 1.11 sec. fast. 



6th, " " 1.35 



7th, " " 1.41 



Prof, Wm. Harkness, of the Executive Committee of the 

 Transit of Venus Commission, has kindly furnished me with 

 the corrections to the Washington clock-signals, as follows: — 



December 4th, correction =^ — 0.24 sec. 



5th, " = — 0.47 sec. 



6th, " = — 0.22 sec. 



7th, " = _ 0.68 sec. 



These corrections refer the time to the centre of the old dome, 

 from which all longitudes are counted. 



