St. Sosoph, July 30. The pony exprese, ivith dates from San Francisco to the 19th inst., arrived hnre this evening. The latest dates from St. Louis received at San Francisco, gave the ïiews that the Baltimore Convention had broken up in a row. Intense aoxiety prevailcd to know what followed. The Republicans regardod this news as so encouraging that they csxfsed caunou to be fircd. Therc is no California news of importance. Tlia official returns of the Oregon election elect Shicld, Doin.. to Congrcss, and leave the Legislatare as herctofore reported, in all probability securino; a Republican and a popular sovereignty Democrnt for U. S. Senators The whole nuraber of votes cast was 12,432, against 11,276 last year.