The Cincinnati Horticultural Society propose to transmit the subjoined petition to Congress. If you concur with them in opinion respecting the desirableness of its object, you are requested to add your influence to theirs for its adoption.

The subscribers respectfully petition your honorable body for such a modification of the Post Office laws as will enable those persons who are engaged in horticultural pursuits, or others, to transmit by mail, seeds, grafts, and such other horticultural objects as are occasionally sent by mail, at a rate of postage not exceeding that of newspapers, provided they be in packages of not more than two ounces in weight.

Believing that you will at once perceive the general advantage to our country from every increased facility of disseminating throughout its varied districts the various plants and fruits which may be thought useful for cultivation, and especially such as it may be desirable to test in different soils and climates, we consider it only necessary to remind you that the charge of letter postage, according to the present system, retards the progress of improvement in horticulture, and therefore deserves modification.

We might add that we have no doubt that the revenues of the Post Office would be greatly increased by the proposed amendment; we consider however that by its adoption the public good would be so much promoted that no question of revenue should be allowed to affect it.