An Act amending the act of May 11, 1889 (P. L. 188, No. 210), entitled "A further supplement to an act, entitled 'An act to establish a board of wardens for the Port of Philadelphia, and for the regulation of pilots and pilotage, and for other purposes,' approved March twenty-ninth, one thousand eight hundred and three, and for regulating of rates of pilotage and number of pilots," further regulating the rates of pilotage.