As a matter of State policy, the organization of Arizona is of the first importance. Situated between New Mexico and Sonora, it is possible now to make it a thoroughly American State, which will constantly exert its influence in both directions, to nationalize the other two. New Mexico is at present thoroughly Mexican in its character and vote. Sonora, if we acquire it at once, will be the same. By separating Arizona from it, and encouraging an American emigration, it will become "the leaven which shall leaven the whole lump." By allowing it to remain attached to New Mexico, or by attaching it to Sonora when acquired, the American influence will be swallowed up in the great preponderance of the Mexican vote. The Apache Indian is preparing Sonora for the rule of a higher civilization than the Mexican. In the past half century, the Mexican element has disappeared from what is now called Arizona, before the devastating career of the Apache. It is every day retreating further South, leaving to us, when it is ripe for our possession, the territory without the population. The incentives to emigration to Arizona, in addition to the charm which the discovery of mineral wealth carries to every mind, are very great. The writer, in an extended tour through the Southern States, found many people, mostly young men of moderate means, ready and anxious to emigrate. The movement is still stronger in Southwestern States, and already many a train of wagons is on its way. It will have no end for years, for so mild and healthy is the climate that emigration is practicable at all seasons. Snow never lies on the soil, and frost is almost unknown. The contracts already authorized by Congress involve the expenditure of six millions of dollars in the next six years; the troops in the Territory will cost as much more. Here is enough money in hard sub-treasury coin, to draw a large population, independent of other considerations. All ready in many places the enterprising merchant exposes his stock of goods only two months from San Francisco, but he does it with the prayer that the Apache may pass him by, and too often he sees his hard-earned profits disappear before the Indian's successful foray.