The Bloomingdale Asylum for the Insane is conducted on the most wise and liberal plan known at the present day. Its superintendent, Dr. Earle, has had ample opportunity to observe the best modes of managing this class of diseases both here and in Europe, and he is one able, by refined sympathies and intellectual discernment, to apply the best that is known and to discover more. Under his care the beautifully situated establishment at Bloomingdale loses every sign of the hospital and the prison, not long since thought to be inseparable from such a place. It is a house of refuge, where those too deeply wounded or disturbed in body or spirit to keep up that semblance or degree of sanity which the conduct of affairs in the world at large demands, may be soothed by gentle care, intelligent sympathy, and a judicious attention to their physical welfare, into health, or, at least, into tranquillity. Dr. Earle, in addition to modes of turning the attention from causes of morbid irritation, and promoting brighter and juster thoughts, which he uses in common with other institutions, has this winter delivered a course of lectures to the patients. We were present at one of these some weeks since. The subjects touched upon were, often, of a nature to demand as close attention as an audience of regular students (not college students, but real students) can be induced to give. The large assembly present were almost uniformly silent, to appearance interested, and showed a power of decorum and self-government often wanting among those who esteem themselves in healthful mastery of their morals and manners. We saw, with great satisfaction, generous thoughts and solid pursuits offered, as well as light amusements, for the choice of the sick in mind. For it is our experience that such sickness arises as often from want of concentration as any other cause. One of the noblest youths that ever trod this soil was wont to say, "he was never tired, if he could only see far enough." He is now gone where his view may be less bounded; but we, who stay behind, may take the hint that mania, no less than the commonest forms of prejudice, bespeaks a mind which does not see far enough to correct partial impressions. No doubt, in many cases, dissipation of thought, after attention is once distorted into some morbid direction, may be the first method of cure; but we are glad to see others provided for those who are ready for them. St. Valentine's Eve had been appointed for one of the dancing parties at the institution, and a few friends from "the world's people" invited to be present. At an early hour the company assembled in the well-lighted hall, still gracefully wreathed with its Christmas evergreens; the music struck up and the company entered. And these are the people who, half a century ago, would have been chained in solitary cells, screaming out their anguish till silenced by threats or blows, lost, forsaken, hopeless, a blight to earth, a libel upon heaven!