76 



XVII. CITY OF ROCK ISLAND, ILLINOIS. 



This city is on the left or south bank of the Mississippi river,* 

 which, for a short distance above and opposite this place, flows from 

 east to west in its course. The western terminus of the Chicago and 

 Rock Iskuid Rail Road, is here. The rail-way connects, however, 

 by a bridge across the river, with the City of Davenport, in Iowa, 

 situated on the opposite bank of the river; and, under the name of the 

 Mississippi and Missouri Rail Road, runs in a direction about 

 W. N. VV. to Iowa City, distant 54 miles from Davenport. 



Station. — The centre of Washington Square (called, on some of 

 the maps, Church Square) bounded on the north by Illinois street, on 

 the south by Orleans street, on the east by Madison, and on the west 

 by Jefferson street. 



1st. The Latitude. 1859, February 2Sth. 

 By 17 circum-meridian altitudes of « Flydrte, south, 

 combined with 20 altitudes of Polaris, north: 

 latitude of station, .... 41° .30' -37 ".8 



2d. Observations for the Time. 1859, February 28th. 

 Sidereal chronometer No. 2557, fast: 



\st Set. 

 By 8 observations on cc Arietis, west h. m. s. 



(at 6h. 37m.) - - 1 38 38.19 



By 8 observations on y' Leonis, east 



(at 6//. 56m.) - - 1 38 38.06 h. m. s. 



\st Result — Chronometer fast (at 6//.. 



46^m.) - - - 1 38 38.12 



h 1 38 38.12 



2d Set. 

 By 10 observations on /3 Leonis, east 



(at 8^. 04?/?.) - - 1 38 38.59 



B}' 6 observations on cc Tauri, and 8 



observations on /3 Tauri, both west 



(at 8/t. 26m.) - - - 1 38 38.25 



* A plan for a city, called ''Rock hland City,'' is laid out on Keck river, 

 about 3 miles south of the " City of Rock Island^ The two places should 

 not he confounded under names so nearly alike. 



