From Tax as.—The steampacket Neptune, from Galveston, arrived at New-Orieans oa the 20th January, brings the following news:The idea of war wiih Mexico has pretty nearly died away. It is now ascertained there are ao Mexicans approaching the frontier; and the receipt of the English Treaty, with the provision for the mediation, assures to Texas, for a time to come, a truce from Mexican aggression.M. Saligny, the French Minister, has made a proposition to the Texan Congress to establish a line of French settlers along the projected military road, to form a living barrier between the interior settlements and the hostile Indians.The English dispatches for Mexico, taken to Texas by Mr. Iken, have been conveyed by a Texan ship of war to Cam-peachy, thence to be tiansmitted to Mexico. This route, it is said, was intimated by Gen. Hamilton in London.No lets than six vessels, it is stated in the Texas papers, were loading, at the last advices, in Liverpool and London for Texas ports. It is feared the market may be overstocked with British goods. [Nat. Intel.F LORI DA.—Si. Av gutline, Jan. 22.—'The schooner F ranees arrived this morning, bringing news of additional success in the