The local indexes directed by this chapter to be made and kept and the entries made therein shall, for the purpose of notice as aforesaid, be deemed and taken to be a part of the record of the instruments to which such entries respectively refer or relate, and such indexes shall be deemed and held to be constructive notice as aforesaid of the record of entering thereof and of the execution and contents of such instruments in the same manner, to the same effect and with like effect as the recording or registering of such instruments now is or may be notice.