Fourth. And the said John Hall Wilton, on the part of the said Phineas T. Barnum, further agrees, that should the said Phineas T. Barnum, after seventy-five concerts, have realized so much as shall, after paying all current expenses, have returned to him all the sums disbursed, either as deposits at interest, for securities of salaries, preliminary outlay, or moneys in any way expended consequent on this engagement, and in addition, have gained a clear profit of at least fifteen thousand pounds sterling, then the said Phineas T. Barnum will give the said Jenny Lind, in addition to the former sum of one thousand dollars current money of the United States of North America, nightly, one-fifth part of the profits arising from the remaining seventy-five concerts or oratorios, after deducting every expense current and appertaining thereto; or the said Jenny Lind agrees to try, with the said Phineas T. Barnum, fifty concerts or oratorios on the aforesaid and first-named terms, and if then found to fall short of the expectations of the said Phineas T. Barnum, then the said Jenny Lind agrees to reorganize this agreement, on terms quoted in his first proposal, as set forth in the annexed copy of his letter; but should such be found necessary, then the engagement continues up to seventy-five concerts or oratorios, at the end of which, should the aforesaid profit of fifteen thousand pounds sterling have not been realized, then the engagement shall continue as at first--the sums herein, after expenses for Julius Benedict and Giovanni Belletti, to remain unaltered, except for advancement. Fifth. And the said John Hall Wilton, agent for the said Phineas T. Barnum, at the request of the said Jenny Lind, agrees to pay to Julius Benedict, of London, to accompany the said Jenny Lind, as musical director, pianist, and superintendent of the musical department, also to assist the said Jenny Lind in one hundred and fifty concerts or oratorios, to be given in the United States of North America and Havana, the sum of five thousand pounds (L5,000) sterling, to be satisfactorily secured to him with Messrs. Baring Brothers, of London, previous to his departure from Europe, and the said John Hall Wilton agrees further, for the said Phineas T. Barnum, to pay all his travelling expenses from Europe, together with his hotel and travelling expenses during the time occupied in giving the aforesaid one hundred and fifty concerts or oratorios--he, the said Julius Benedict, to superintend the organization of oratorios if required.