iJefferson County Californians.(Corrispondence of the Watertown Chronicle,)New Uoscok, 8 mites west St. Joe,2fci April, 1852.Friend Hadley—The Sullivan, Lake Mills nod Whitewater companies met this morning1, united, and made choice of John Nutter as captain. The names and residences of the company are as follows:aa1 1IAbram Bolser,Charles Dunning,Isaac English Lewis Butler,Janies Summerville, E'j;ness Sharchy,Joseph Moore, Columbus Higby, William Fligby,Charles Hibbard,Henry Torrey,Charles Jaquith, Greece Jaquitb, Ambrose Jaqattb, Thomas Chase,John Nutter,Miles Holmes,Davtd Ca^tright, Stephen Davenport,.3ba Davenport.H. W. Johnston, M»D. J. L. Knapp,David Crump,James Crump,John G. Atwood,T D. Johnson,Jerome Cole,Charles Rodgers,Jacob Gause,W.liiam Merieie,If. Mericle,Henry Fryer.Cornelius Fryer,Farmington, do do. do.do.do,do.Oak Hill.do.do.do.do, do. doSullivan do. do. do, Jefferson, do.do.Lake Mills, do. do.do.do.do. do. Whitewater. Walworth co. do. do.11Oregon,—A letter datpd Salem Oregon, Match Itftb, says; “This is a most magnifi cent country, and will in the course of a few years, ba tha garden of the United States. There are some of tha most enrapturing views to bo seen here that ever fe»ted the eye of man, I have already explored all the old settled portions of it, but I have been told that Pugets Sound, IJmqua and Rogue River vallies, will equal them for beauty, productiveness audelima'e The travelling hero is mostly on horseback, but it is br*cau*lt;* we have no wagons in the countiy, nor van we get any made here*— There is no coutitiy in the world, where better wagon roads can ho had than in this with its immense open prairies and orehard-like groves. Within the past three months I have travelled lift! miles, nearly 900 of which I lode oil horseback.*