At the third concert of the Boston Symphony Orchestra in Sanders Theatre last evening, Mr. W. J. Winch was the soloist. He at once found favor with the audience and was encored after each selection. In the Aria from Weber's "Euryanthe" Mr. Winch was less happy than in the four short songs of Dvorak. The orchestral accompaniment of the Aria was very unsatisfactory. In the Dvorak songs, Mr. Winch was accompanied on the piano by no less an artist than Mr. Nikisch. Of course the songs were interpreted exquisitely. The Haydn Symphony was given with precision and with charming grace. Mr. Nikisch's splendid string band was at its best and would have delighted even Haydn himself. The only uninteresting number on the program was Brahm's Ten Variations on a Thema by Hayden. The audience was moved to hearly applause at the close by the magnificent hymn-like climax. Goldmark's Overture, "Sakurtala," of rich orchestration and beautiful melody, was grandly played and was the most effective number of the evening.