The general register of sasines for Scotland shall be so kept that the writs applicable to each county shall be entered in a separate series of presentment books, and the writs shall be minuted in a separate series of minute books, and engrossed in a separate series of register volumes, in the order of presentment, and where any writ shall contain land in more than one county such writ shall be entered by the ingiver in the presentment book of such of these counties as may be specified in the F1application for registration and shall be minuted in the minute book of such of these counties or county as are specified in F1that application and shall be engrossed at length in the division of the register applicable to one only of the said counties; and a memorandum shall be entered in each division of the register applicable to the other counties or county in the presentment book of which it is entered as aforesaid, setting forth the volume of the register and the folio or folios of such volume in which such engrossment is made; and such memorandum shall be deemed to be equivalent to full engrossment of such writ in the division of the register wherein such memorandum shall be entered as aforesaid: For the purposes of this Act, the barony and regality of Glasgow, and also the stewartry of Kirkcudbright, shall each be treated as a county.