An Act amending the act of March 18, 1875 (P. L. 32, No. 36), entitled "An act requiring recorders of deeds to prepare and keep in their respective offices general, direct and ad sectum indexes of deeds and mortgages recorded therein, prescribing the duty of said recorders and declaring that the entries in said general indexes shall be notice to all persons," authorizing the combining of indexes for deed with indexes for mortgages.