Yet the Isthmus route to California is only by comparison acceptable, even for passengers and goods, while for mails it was at best but endurable. It is nearly twice the length of the direct route from the Atlantic seaboard, while for the residents of the Evart Valley it is intolerably circuitous. A letter mailed at St. Paul for Astoria or Oregon City, or at Omaha for Sacramento, must, under the regimen of the last ten years, be conveyed overland to New York, or by steamboat to New Orleans, where it might have to wait ten or twelve days for an Isthmus steam-ship, making a circuit of twice to thrice the distance by a direct route to its destination. There has been, indeed, for some four years past, a tri-weekly overland mail from St. Louis via New Mexico and Arizona to San Diego, in the extreme south of California,--a route nearly a thousand miles longer than it need or should have been, and evincing a perverse ingenuity in the avoidance not only of Salt Lake and Carson Valley, but even of Santa Fe. This long and mischievous detour--one of the latest of our wholesale sacrifices to Southern jealousy and greed--has at length been definitely abandoned, and, instead of a tri-weekly mail via Elposo and the Gila, together with a weekly by Salt Lake, and a fortnightly or tri-monthly by the Isthmus, we have now one daily mail on the direct overland route from the Missouri, at St. Joseph or Omaha, via the Platte, North Platte, Sweetwater, South Pass, Fort Bridger, Salt Lake, Simpson's route, Carson Valley, and thence across the Sierra Nevada to Placerville and San Francisco, in shorter time than was usually made by way of the Isthmus, at less cost than that of the three mails which it replaces, while the immense advantage of a daily mail each way, over a tri-monthly or even weekly, needs no elucidation. The territories of Colorado, Utah, Nevada, are thus brought into intimate and constant communication with the loyal States, and made to feel the mighty pulsations of the National heart, in this heroic and eventful crisis of the Republic's history.