146 



Dr. T. E. Thorpe. 



horizontally in its case and guard-box. For the third instrument I 

 was indebted to Mr. George Salt, of Saltaire, who is well-known for 

 his horological skill and knowledge ; it was a remarkably well-finished 

 instrument by Kuhlberg, No. 2,918, and was specially compensated 

 for fluctuations of temperature. The Owens College instrument, 

 however, went so well throughout the entire journey that I used it 

 exclusively, relying on the others mainly for comparisons. At several 

 of the stations, viz., at Ogden, Chicago, Allegheny, and Washington 

 I was able, thanks to the Directors of the observatories at those 

 places, to make comparisons with standard instruments ; at La Junta 

 the errors and rates were furnished to me by Professor Hall ; on other 

 occasions I obtained the time from Dr. Schuster's observations. 



Table V. 



Station. 



Leeds , 



S.S. "Germanic' 



New York. . . . 



La Junta 



j> 



Manitou 



Denver 



Salt Lake City 



Ogden 



Grreen River . . 

 Grand Island . 

 Council Bluffs 



Chicago 



33 



Allegheny .... 

 "Washington . . 



Date. 



May 21 -04 

 June 3 -04 

 9-04 



14-09 

 22-15 

 „ 26-47 



July 4 -04 



12-26 



20-31 



25-17 

 27 -43 

 30 



Aug. 



Sept. 



4 to 6 







8 



•29 







05 



17 



•31 



33 



23 



•67 







49 



24 



•69 







52 



26 



•29 







58 



28 



28 



1 



10 



30 



•27 



1 



17 



1 



•69 



1 



24 



2 



•67 



1 



27 



5 



46 



1 



34 



7 



11 



1 



38 



Error on 

 G-. M. T. 



m. s. 



1 48 -0 slow 



1 30-0 „ 



1 23 8 „ 



1 18-9 „ 



1 09-3 „ 



1 04-4 „ 



57 -0 „ 



49-3 „ 



40-3 „ 



39-7 „ 



34-5 „ 



0-27-9 „ 



Daily 

 rate. 



+ 2-59 

 + 2-50" 



+ 3-50 



Remarks. 



Comparisons with 

 Post Office 1 

 p.m. time signal. 



Comparisons with 

 P. O. time signal 

 and Frodsham 

 5,674. 



Time gun at Liver- 

 pool. 



Ship's chronometer 

 Bassett 555. 



Negus standard 

 clock. 



Comparison with 

 Negus 1,340. Ob- 

 servations fur- 

 nished by Prof. 

 Asaph Hall. 



Sextant observa- 

 tions bv Dr. 

 Schuster. 



Comparison with 

 Negus 1,481 by 

 Prof. Truman 

 Safford. 



Sextant observa- 

 tions by Dr. 

 Schuster. 



Comparison with 

 observatory clock 

 by Prof. Colbert. 



Observatory clock. 



Naval observatory 

 clock, Professor 

 Harkness. 



