The form of application to the Cooper Union includes name of applicant, residence, age, occupation, name of employer, place of business. Parents or guardians, in the case of minors, fill out the blanks, but applications must be made in person. It only remains to say that the applications are in advance of the capacity of the Institute, but that the democratic principle of “first come first served” is rigorously applied. Applications do not hold over from one year to another, but must be renewed. It is possible for persons from any part of the country to avail themselves of the facilities here afforded. Board for gentlemen can be obtained at very reasonable rates, not far from the Union. Two rooming together and lunching at restaurants can live well at a low rate. Ladies also can procure board in Brooklyn, or in the suburban towns, or even in the city itself, at a rate far below what is generally supposed possible. Passing the Cooper Institute, as the writer does nearly every day, he looks with undiminished interest upon the young men and young women who go in and out of the building; while to attend one of the lectures is a pleasure far greater than that of merely listening. If it were possible to assemble in one place all who have been helped upward and onward here, among them would be found men and women now in the most influential positions, and the intelligence visible in the countenances of those who, though still earning their bread by the sweat of the brow, are filled with elevating thoughts, and are consciously members of the aristocracy of intellect, would be an ample reward to founder, trustees and teachers, for all their work and labor of love. Nor is this all; these pupils will transmit influences through their posterity to the end of time. Peter Cooper, like Washington, Lafayette, and Franklin, still speaks “words of truth and soberness.” He shakes hands with every aspiring young man, saying: “My son, I will help you;” with every young woman who cherishes a high ambition: “My daughter, I have a deep sympathy with you.” It is useless to say, “Long may his memory endure!” It can not die. In concluding this paper the writer must be permitted to express his satisfaction that the sketch is to appear in a magazine called into being by an institution which on another principle, equally efficient and much more widely diffused in the sphere of its influence, promotes the advancement of Science and Art by bringing them within the reach of all aspirants, without distinction of race, sex, age, or previous condition of servitude. GREEN SUN AND STRANGE SUNSETS.