Section 20 Declarations to be in the form prescribed by schedule.

In all cases where a declaration in lieu of an oath shall have been substituted by this Act, or by virtue of any power or authority hereby given, or where a declaration is directed or authorized to be made and subscribed under the authority of this Act, or of any power hereby given, although the same be not substituted in lieu of an oath heretofore legally taken, such declaration, unless otherwise directed under the powers hereby given, shall be in the form prescribed in the schedule hereunto annexed.