The highly decorated frieze will be of polished red marble, and surmounting the projecting keystone of the arch will be a bronze representation of an American eagle. On the central panel of the attic will be the inscription: "The United States of America, in Memorial Glorious to Christopher Columbus, Discoverer of America." The ornamentation of the attic consists of representations of Columbus' entrance into Madrid. Crowning all is to be a group in bronze symbolical of Discovery. In this group there will be twelve figures of heroic size, with a gigantic figure representing the Genius of Discovery heralding to the world the achievements of her children. Mr. Hertz, the designer, is only twenty-one years old, and is a student in the department of architecture of Columbia College. THE SPANISH FOUNTAIN IN NEW YORK. The Spanish-American citizens also wish to present a monument to the city in honor of the discovery. It is proposed to have a Columbus fountain, to be located on the Grand Central Park plaza, at Fifth Avenue and Fifty-ninth Street, in the near future. The statuary group of the fountain represents Columbus standing on an immense globe, and on either side of him is one of the Pinzon brothers, who commanded the Pinta and Nina. Land has been discovered, and on the face of Columbus is an expression of prayerful thanksgiving. The brother Pinzon who discovered the land is pointing to it, while the other, with hand shading his eyes, anxiously seeks some sign of the new continent. It is proposed to cast the statuary group in New York of cannon donated by Spain and Spanish-American countries. The first of the cannon has already arrived, the gift of the republic of Spanish Honduras. The proposed inscription reads: _A COLON y Los PINZONES Los Espanoles E Hispano-Americanos De Nueva York._ To COLUMBUS and the PINZONS, the Spaniards and Spanish-Americans of New York. FESTIVAL ALLEGORY FOR THE NEW YORK CELEBRATION OF THE 400TH ANNIVERSARY OF COLUMBUS' DISCOVERY, 1892. One of the features of the New York celebration of the Columbus Quadro-Centennial is to be the production, October 10th, in the Metropolitan Opera House, of "The Triumph of Columbus," a festival allegory, by S. G. Pratt. The work is written for orchestra, chorus, and solo voices, and is in six scenes or parts, the first of which is described as being "in the nature of a prologue, wherein a dream of Columbus is pictured. Evil spirits and sirens hover about the sleeping mariner threatening and taunting him. The Spirit of Light appears, the tormentors vanish, and a chorus of angels join the Spirit of Light in a song of 'Hope and Faith.'" Part II. shows "the historical council at Salamanca; Dominican monks support Columbus, but Cardinal Talavera and other priests ridicule him." Columbus, to disprove their accusations of heresy on his part, quotes "sentence after sentence of the Bible in defense of his theory."