An Act amending the act of May 9, 1949 (P. L. 919, No. 257), entitled "An act designating certain clerks of courts agents of the Commonwealth in the collection and transmission of fines, forfeited recognizances and other forfeitures imposed, lost or forfeited into any court for the use of the Commonwealth;....," changing the days for rendering certain returns to the Department of Revenue, and providing for evidence of timely filing.