Section 221. Separability clause

If  any clause, sentence, paragraph,
  section or part of this chapter  shall  be  adjudged  by  any  court  of
  competent  jurisdiction  to  be invalid, such judgment shall not affect,
  impair or invalidate the remainder thereof, but shall be confined in its
  operation to the clause, sentence, paragraph, section  or  part  thereof
  directly  involved  in the controversy in which such judgment shall have
  been rendered.