While reading a notice of a successful attempt to have musical performances carried through in concert by the insane at Rouen, we were forcibly reminded of a similar performance we heard a few weeks ago at Sing Sing. There the female prisoners joined in singing a hymn, or rather choral, which describes the last thoughts of a spirit about to be enfranchised from the body; each stanza of which ends with the words, "All is well;" and they sang it--those suffering, degraded children of society--with as gentle and resigned an expression as if they were sure of going to sleep in the arms of a pure mother. The good spirit that dwelt in the music made them its own. And shall not the good spirit of religious sympathy make them its own also, and more permanently? We shall see. Should the _morally_ insane, by wise and gentle care, be won back to health, as the wretched bedlamites have been, will not the angels themselves give thanks? And will any man dare take the risk of opposing plans that afford even a chance of such a result? Apart also from good that is public and many-voiced, does not each of us know, in private experience, much to be thankful for? Not only the innocent and daily pleasures that we have prized according to our wisdom; of the sun and starry skies, the fields of green, or snow scarcely less beautiful, the loaf eaten with an appetite, the glow of labor, the gentle signs of common affection; but have not some, have not many of us, cause to be thankful for enfranchisement from error or infatuation; a growth in knowledge of outward things, and instruction within the soul from a higher source. Have we not acquired a sense of more refined enjoyments; clear convictions; sometimes a serenity in which, as in the first days of June, all things grow, and the blossom gives place to fruit? Have we not been weaned from what was unfit for us, or unworthy our care? and have not those ties been drawn more close, and are not those objects seen more distinctly, which shall forever be worthy the purest desires of our souls? Have we learned to do any thing, the humblest, in the service and by the spirit of the power which meaneth all things well? If so, we may give thanks, and, perhaps, venture to offer our solicitations in behalf of those as yet less favored by circumstances. When even a few shall dare do so with the whole heart--for only a pure heart, can "avail much" in such prayers--then ALL shall soon be well. CHRISTMAS.