_The Memoirs of Margaret Fuller Ossoli_, by RALPH WALDO EMERSON, WILLIAM ELLERY CHANNING, and JAMES FREEMAN CLARKE, published a few weeks ago by Phillips, Sampson & Co., of Boston, are generally praised in the critical journals, but in this country, where the subject was generally known in literary circles, there is a common feeling of surprise at the artistic and successful _exaggeration_ of her capacities and virtues. The book, however, is in parts delightfully written, and the melancholy fate of the heroine gives it a character of romance apart from its merits as a biographical and critical composition. The _Athenæum_ thus refers to some additional _material_ for her memoirs, which, it strikes us, should have been communicated to the custodians of her reputation at an earlier day: "We have received permission to state that poor Margaret Fuller, on the eve of that visit to the Continent which was to prove so eventful and disastrous, left in the hands of a friend in London a sealed packet, containing, it is understood, the journals which she kept during her stay in England. Margaret Fuller--as they who saw her here all know--contemplated at that time a return to England at no very distant date;--and the deposit of these papers was accompanied by an injunction that the packet should then be restored with unbroken seal into her hands. No provision was of course made for death:--and here we believe the lady in possession feels herself in a difficulty, out of which she does not clearly see her way. The papers are likely to be of great interest, and were doubtless intended for publication; but the writer had peremptorily reserved the right of revision to herself, and forbidden the breaking of the seals, on a supposition which fate has now made impossible. It seems to us, that the equity of the case under such circumstances demands only a reference to Margaret Fuller's heir, whoever that may be; and with his or her concurrence, the lady to whom these MSS. were intrusted--and who probably knows something of the author's feeling as to their contents--may very properly constitute herself literary executor to her unfortunate friend." * * * * * Of BAYARD TAYLOR _The Tribune_ said a few days ago: