(1)    The title to all property acquired for the purposes of said institution shall be in the name of said city, and shall be held by said city perpetually for such purposes.

   (2)   Before incurring any liability, the auditorium board shall by resolution determine the amount of money necessary for the purposes of said institution; and thereupon said corporation shall pay into the auditorium fund one-half thereof, in such installments as may be required and agreed upon. All receipts on account of said institution shall be paid into, and all expenditures defrayed from the auditorium fund.

   (3)   If any such institution shall at any time when there shall be outstanding no bonds issued under s. 229.21 (7) become profit-earning, over and above the expense of maintenance, repairs, insurance and other expenses connected with the operation thereof, the net profits arising from the original auditorium shall be separated from those arising from the addition, and the net profits arising from the original auditorium shall be divided equally between said corporation and the city treasury, and the net profits from said addition shall be paid into the city treasury, the amounts paid into the city treasury from either source to be credited to the general city fund. If, however, at any time there shall be outstanding bonds issued under s. 229.21 (7), any net profit from such auditorium and such addition shall be applied from time to time, or held by the treasurer to apply on the interest and principal of said bonds.