I can not too strongly urge the policy of authorizing the establishment of a line of steamships regularly to ply between this country and foreign ports and upon our own waters for the transportation of the mail. The example of the British Government is well worthy of imitation in this respect. The belief is strongly entertained that the emoluments arising from the transportation of mail matter to foreign countries would operate of itself as an inducement to cause individual enterprise to undertake that branch of the task, and the remuneration of the Government would consist in the addition readily made to our steam navy in case of emergency by the ships so employed. Should this suggestion meet your approval, the propriety of placing such ships under the command of experienced officers of the Navy will not escape your observation. The application of steam to the purposes of naval warfare cogently recommends an extensive steam marine as important in estimating the defenses of the country. Fortunately this may be obtained by us to a great extent without incurring any large amount of expenditure. Steam vessels to be engaged in the transportation of the mails on our principal water courses, lakes, and ports of our coast could also be so constructed as to be efficient as war vessels when needed, and would of themselves constitute a formidable force in order to repel attacks from abroad.. We can not be blind to the fact that other nations have already added large numbers of steamships to their naval armaments and that this new and powerful agent is destined to revolutionize the condition of the world. It becomes the United States, therefore, looking to their security, to adopt a similar policy, and the plan suggested will enable them to do so at a small comparative cost.