Section 42. Register of county

Any act done in pursuance of law by the
  register of a county shall  be  deemed  to  be  a  compliance  with  any
  provision  of  law  authorizing  or requiring such act to be done by the
  county clerk of such  county,  and  any  instrument  or  writing  filed,
  entered or recorded in pursuance of law in the office of a register of a
  county,  shall  be  deemed  to be a compliance with any provision of law
  authorizing or requiring such paper to be filed, entered or recorded, as
  the case may be, in the office of the clerk of  such  county.  The  term
  county  clerk  when  used in relation to conveyances of real property or
  the filing or recording of instruments which are or may be filed in  the
  office  of  the register of a county, shall include the register of each
  county in which there is a register.