"Article 3.--The repertoire to comprise the Operas of _Martha_, _Traviata_, _Trovatore_, _Lucia di Lammermoor_, _Il Barbiere di Seviglia_, _Crispino_, _Rigoletto_, _Linda_, _Carmen_ and _Don Giovanni_; and thereof 'Il Barbiere,' 'La Traviata,' 'Martha' and 'Zerlina' in _Don Giovanni_ shall be assigned exclusively to Madame Patti during the entire Operatic Season. The Airs to be sung at the Concerts (if any) are to be selected by Madame Patti. "Article 4.--The selection from such Repertoire of the Opera to be given at her re-entrée shall be selected and be fixed exclusively by Madame Patti; but with that exception the choice therefrom of the Operas to be given at the several representations shall be Tuesdays and Saturdays, and the days of the week on which Concerts (if any) shall be given shall be fixed by the mutual agreement of the contracting parties; and Mr. Mapleson engages to adhere thereto except in case of sudden, necessary change through the illness of other principal Artistes in the cast of the chosen Opera. "Article 5.--Madame Patti shall be free to attend Rehearsals, but shall not be required or bound to attend at any. "Article 6.--Madame Patti will at her own expense provide all requisite costumes for the Operas selected. "Article 7.--Mr. Mapleson engages that Madame Patti shall be announced daily during the series of Representations or Concerts in a special leaded advertisement among the Theatrical Advertisements over the Clock as well as in the Operatic Casts or Concert Programmes in all Journals in which he may advertise his Operas or Concerts and likewise that her name shall appear in a separate line of large letters in all Announce Bills of Operas or Concerts in or at which she is to appear and that such letters shall be at least one third larger than those employed for the announcement of any other Artiste in the same Cast or Programme. "Article 8.--Madame Patti is not to be at liberty to sing elsewhere during this engagement except at State Concerts.