t it may become necessary, with the wisest regard to the public
interests, to introduce amendments and alterations in the system.

There is a strong desire manifested in many quarters so to alter the
tariff of letter postage as to reduce the amount of tax at present
imposed. Should such a measure be carried into effect to the full extent
desired, it can not well be doubted but that for the first years of its
operation a diminished revenue would be collected, the supply of which
would necessarily constitute a charge upon the Treasury. Whether such
a result would be desirable it will be for Congress in its wisdom
to determine. It may in general be asserted as true that radical
alterations in any system should rather be brought about gradually than
by sudden changes, and by pursuing this prudent policy in the reduction
of letter postage the Department might still sustain itself through the
revenue which would accrue by the increase of letters. The state and
condition of the public Treasury has heretofore been such as to have
precluded the recommendation of any material change. The difficulties
upon this head have, however, ceased, and a larger discretion is now
left to the Government.

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
construc