a iso*Pkof. Geil’s Concert.—The audience at the Opera House last night was not large but very appreciative and the pr ’gramme was heartily enjoyed throughoutThe entertainment was diversified, and introduced a member of excellentmusicians.Miss Marconnier’s splendid mezzo-ao-prano voicewas certaioly the most musical and pleasant of all the vocal efforts, and it 19 not a small honor to rauk second to such a vocalist. With proper oultivatioo, her voice would undoubtedly develope into ooe of the best in tbis country.Miss Fannie Kahn render' d valuable assistance in « duet. M s es Effie Carr and Laura Weil eang a duet very sweetly. Mrs. fleimann sang “Little Nell” with feeling, and Miss Suess won an encore in her solo.Mr. Schreiber gave additional evidence* of his thorough mastery of the violin, and played some very diffiou't music with thorough art. The LeiderkranzSociety also added very materially to the entertainment by good singing. Among tbebestacbievements of the evening were the piano solos by Miss Louisa Geil and Masters A. Habbe and H. F. Geil.