Section 4
SEC. 4. All proceeds derived from said national race, after deducting the expenses of administration which shall not be in excess of fifteen per centum of the gross receipts, plus the one-fourth of twenty per centum accumulated under section two, shall be set aside for the payment of prizes in the following proportion: thirty per centum to pay prizes to horses winning the first, second, and third places in the "National Commonwealth Race"; thirty per centum to pay prizes to horses winning the first, second, and third places in the "Grand Derby"; thirty per centum to pay prizes to horses winning in other ordinary races on that day; and ten per centum to pay prizes, in equal parts, to the breeders of the horses winning the first places in the "National Commonwealth Race" and "Grand Derby".