Willard's Hall. Tuesday, March 22d, 1864. Gottschalk's farewell concerts in America. : Mr. M. Strakosch respectfully informs the public that he has succeeded in making arrangements for the celebrated pianist and composer, Mr. L.M. Gottschalk, to give in Washington two grand concerts, when he will perform several of his most admired compositions. In order to make these entertainments the most brilliant and varied ever given in this city, the following distinguished artists have been engaged, and will appear jointly with L.M. Gottschalk: M'me Charlotte Varian, ... Theodore Habelmann, ... Sig. Carlo Patti, ... Musical director and conductor, Mr. S. Behrens ... Admission, $1.00. Reserved seats, 50 cts. extra ... Doors open at quarter-past 7 o'clock. To commence at 8 o'clock. Thursday, March 26, last farewell concert of Gottschalk entire change of programme. ...