88 



2d. — New Buffalo signals recorded at both stations. 



2d Mean. — Electric signals sent from New Buifalo to Chicago, 03 31.45 



1st Mean. — Electric signals sent from Chicago to New Buffalo, 



as above, - - - - - - - 03 31.49 



Result: — New Buffalo Observing Station is east, in longitude, 

 of Chicago observing station No. 3, by a mean of the two 



sets of signals, - - . - 



Longitude of Chicago Station No. 3, 



2d Determination. 

 Longitude of New Buffalo Station, 



. _ 03 31.47 

 + 5 50 31.20 



+ 5 46 59.73 



We have here two satisfactory results for the longitude; but the 

 unfavourable state of the sky on both nights prevented a satisfactory 

 determination of the latitude of this station. A third visit, made on 

 the 23d of May, gave an opportunity for a third trial of the difference 

 of longitude between this place and Chicago, and for observing for the 

 latitude, 'i'he night, this time, was clear, and good pairs of stars, 

 both for the time and the latitude, were selected. Those for the lati- 

 tude, and the result, are already given at the beginning of this article, 

 XVllI. 



Observations for the Time, 1859, May 23c?. 

 Sidereal chronometer No. 2557, fast of New Buff^alo sidereal time: 

 By 12 observations on a, Coronae Borealis, cast (at //.. m. s. 



12/*. 1 9m.) - - - - +1 83 33.47 



By 13 observations on e Leonis, west (at 12//. 4l7«.) + 1 33 33.64 



Result — Chronometer No. 2557, fast of New Buffldo 



sidereal time (at 12A. 3()m.) - - +1 33 33.55 



