No civil government having been provided by Congress for California, the people of that Territory, impelled by the necessities of their political condition, recently met in convention for the purpose of forming a constitution and State government, which the latest advices give me reason to suppose has been accomplished; and it is believed they will shortly apply for the admission of California into the Union as a sovereign State. Should such be the case, and should their constitution be conformable to the requisitions of the Constitution of the United States, I recommend their application to the favorable consideration of Congress. The people of New Mexico will also, it is believed, at no very distant period present themselves for admission into the Union. Preparatory to the admission of California and New Mexico the people of each will have instituted for themselves a republican form of government, "laying its foundation in such principles and organizing its powers in such form as to them shall seem most likely to effect their safety and happiness." By awaiting their action all causes of uneasiness may be avoided and confidence and kind feeling preserved. With a view of maintaining the harmony and tranquillity so dear to all, we should abstain from the introduction of those exciting topics of a sectional character which have hitherto produced painful apprehensions in the public mind; and I repeat the solemn warning of the first and most illustrious of my predecessors against furnishing "any ground for characterizing parties by geographical discriminations." A collector has been appointed at San Francisco under the act of Congress extending the revenue laws over California, and measures have been taken to organize the custom-houses at that and the other ports mentioned in that act at the earliest period practicable. The collector proceeded overland, and advices have not yet been received of his arrival at San Francisco. Meanwhile, it is understood that the customs have continued to be collected there by officers acting under the military authority, as they were during the Administration of my predecessor. It will, I think, be expedient to confirm the collections thus made, and direct the avails (after such allowances as Congress may think fit to authorize) to be expended within the Territory or to be paid into the Treasury for the purpose of meeting appropriations for the improvement of its rivers and harbors.