53 



POINTS WITH WHICH CONNECTIONS WERE MADE, &c. 



Connection was made with Salt Lake City on the nights of July 2gth and joth, 

 and August 2d, 5th, and 6th. Observations for time were made at Colorado Springs 

 on the nights of July 28th, 29th, 3oth, and 3ist, and August 2d, 4th, 5th, and 6th; 

 at Salt Lake on the nights of July 28th, 29th, 3oth, and 3ist, and August ist, 2d, 

 5th, and 6th. 



The reductions of time-observations for Colorado Springs were made in the field 

 by the astronomer, and also those made at Salt Lake after returning from the field. 

 He also made a new reading of the signals sent and received from both stations. 



The telegraph-line between Colorado Springs and Salt Lake is 763 miles long, 

 and divided into four circuits. The signals are transmitted from one circuit to another 

 by means of automatic repeaters : one placed at Denver, Colorado Territory; one at 

 Cheyenne, Wyoming Territory; and one at Corinne, Utah: the length of the line 

 being from Colorado Springs to Denver, 75 miles; from Denver to Cheyenne, 106 

 miles; from Cheyenne to Corinne, 537 miles; and from Corinne to Salt Lake, 45 miles; 

 using at every station sixty-five Grove cells. 



The use of the wires was always freely tendered by the Western Union Tele- 

 graph Company, although in many cases they were needed at the same time for the 

 transaction of the regular business of the company. 



It sometimes occurs when two lines of wires are fixed to the same poles that, 

 during heavy storms, the wires are brought in contact by oscillation, which was over- 

 come in this case by connecting the two wires at an intermediate station, Denver, 

 Colorado, upon the suggestion of Mr. Woodward, the superintendent at that point. 



