Where in terms of the M1Registration of Leases (Scotland) Act, 1857, or of section twenty-four of this Act, any deed or extract shall have been recorded in the appropriate Register of Sasines, and where in terms of that Act or of the said section any such deed or extract shall fall to be recorded again, or where any extract from a competent register of any deed the principal of which has already been recorded in the appropriate Register of Sasines falls to be so recorded, it shall not be necessary for the keeper of the Register of Sasines in which such deed or extract falls to be recorded, or in which such extract of any recorded deed falls to be recorded, to engross such deed or extract in the register at length, but the keeper of such Register of Sasines may in place of such engrossment enter in the register a short memorandum specifying the deed or extract and the book and folio in which the same is already engrossed, and in the case of an extract of a deed the principal of which has already been recorded in the appropriate Register of Sasines the book and folio in which the principal is already engrossed, and such memorandum shall have the same effect as if the deed or extract were engrossed in the register at length in place of such memorandum.