We have reason to hope that the proposed railroad across the Isthmus at Panama will be successfully constructed under the protection of the late treaty with New Granada, ratified and exchanged by my predecessor on the 10th day of June, 1848, which guarantees the perfect neutrality of the Isthmus and the rights of sovereignty and property of New Granada over that territory, “with a view that the free transit from ocean to ocean may not be interrupted or embarrassed” during the existence of the treaty.  It is our policy to encourage every practicable route across the isthmus which connects North and South America, either by railroad or canal, which the energy and enterprise of our citizens may induce them to complete, and I consider it obligatory upon me to adopt that policy, especially in consequence of the absolute necessity of facilitating intercourse with our possessions on the Pacific.

The position of the Sandwich Islands with reference to the territory of the United States on the Pacific, the success of our persevering and benevolent citizens who have repaired to that remote quarter in Christianizing the natives and inducing them to adopt a system of government and laws suited to their capacity and wants, and the use made by our numerous whale ships of the harbors of the islands as places of resort for obtaining refreshments and repairs all combine to render their destiny peculiarly interesting to us.  It is our duty to encourage the authorities of those islands in their efforts to improve and elevate the moral and political condition of the inhabitants, and we should make reasonable allowances for the difficulties inseparable from this task.  We desire that the islands may maintain their independence and that other nations should concur with us in this sentiment.  We could in no event be indifferent to their passing under the dominion of any other power.  The principal commercial states have in this a common interest, and it is to be hoped that no one of them will attempt to interpose obstacles to the entire independence of the islands.

The receipts into the Treasury for the fiscal year ending on the 30th of June last were, in cash, $48,830,097.50, and in Treasury notes funded $10,833,000, making an aggregate of $59,663,097.50; and the expenditures for the same time were, in cash, $46,798,667.82, and in Treasury notes funded $10,833,000, making an aggregate of $57,631,667.82.

The accounts and estimates which will be submitted to Congress in the report of the Secretary of the Treasury show that there will probably be a deficit occasioned by the expenses of the Mexican War and treaty on the 1st day of July next of $5,828,121.66, and on the 1st day of July, 1851, of $10,547,092.73, making in the whole a probable deficit to be provided for of $16,375,214.39.  The extraordinary expenses of the war with Mexico and the purchase of California and New Mexico exceed in amount this deficit, together with the loans heretofore made for those objects.  I therefore recommend that authority be given to borrow whatever sum may be necessary to cover that deficit.  I recommend the observance of strict economy in the appropriation and expenditure of public money.