The wings of the Boston Opera House were crowded at 7 o'clock last night, when over 200 students from Harvard and Radcliffe, who had been engaged to act as the Theban mob in Sir John Martin-Harvey's production of "Oedipus Rex" appeared for their first performance.

The portions of the play in which the mob takes part is extraordinary in several respects. There is but one scene built on the stage, the orchestra is placed behind the stage, and the orchestra pit is covered with broad stairs. Up these stairs the Theban mob race from all parts of the house, streaming down the aisles from every entrance in the orchestra.

When questioned as to the merits of his mob before the performance last night, Sir John declared, "I really haven't seen them in action yet, but I hear that we have obtained a very intelligent mob from Harvard."