The district attorney of the Twenty-Sixth Judicial District of this state shall receive, in addition to the salary now paid him by the state, an annual salary of seven thousand two hundred fifty dollars, payable monthly on his own warrant by the parishes comprising said district and apportioned as follows:
(1) By the parish of Bossier, the sum of three thousand six hundred twenty five dollars per annum.
(2) By the parish of Webster, the sum of three thousand six hundred twenty five dollars per annum.