"|Respected Sir|,--Calling at the post-office this morning, our worthy and efficient postmaster offered for my perusal a paragraph in the Boston Morning Post of the 3d instant, wherein certain effusions of the pastoral muse are attributed to the pen of Mr. James Russell Lowell. For aught I know or can affirm to the contrary, this Mr. Lowell may be a very deserving person and a youth of parts (though I have seen verses of his which I could never rightly understand); and if he be such, he, I am certain, as well as I, would be free from any proclivity to appropriate to himself whatever of credit (or discredit) may honestly belong to another. I am confident, that, in penning these few lines, I am only forestalling a disclaimer from that young gentleman, whose silence hitherto, when rumor pointed to himward, has excited in my bosom mingled emotions of sorrow and surprise. Well may my young parishioner, Mr. Biglow, exclaim with the poet, 'Sic vos non vobis,' &c.; though, in saying this, I would not convey the impression that he is a proficient in the Latin tongue,--the tongue, I might add, of a Horace and a Tully. "Mr. B. does not employ his pen, I can safely say, for any lucre of worldly gain, or to be exalted by the carnal plaudits of men _digito monstrari_, &c. He does not wait upon Providence for mercies, and in his heart mean _merces_. But I should esteem myself as verily deficient in my duty (who am his friend and in some unworthy sort his spiritual _fidus Achates_, &c.), if I did not step forward to claim for him whatever measure of applause might be assigned to him by the judicious. "If this were a fitting occasion, I might venture here a brief dissertation touching the manner and kind of my young friend's poetry. But I dubitate whether this abstruser sort of speculation (though enlivened by some apposite instances from Aristophanes) would sufficiently interest your oppidan readers. As regards their satirical tone, and their plainness of speech, I will only say, that, in my pastoral experience, I have found that the Arch-Enemy loves nothing better than to be treated as a religious, moral, and intellectual being, and that there is no _apage Sathanas_! so potent as ridicule. But it is a kind of weapon that must have a button of good-nature on the point of it.