Section 66. If the copy of the writ is deposited, as aforesaid, within three days after the day when the attachment was made the attachment shall take effect from the time it was made, otherwise, from the time when the copy is so deposited; but attachments of land, and of leasehold estates which have an original term of more than seven years, shall in no case be valid against purchasers in good faith and for value, other than parties defendant, before the time when the copy is deposited as aforesaid, and no attachment shall be valid against such purchasers as to any particular parcel of land, or as to any particular leasehold estate as aforesaid, in any case where the name of the owner thereof under which he acquired title thereto as appears on the public records is not included in the writ unless the writ is seasonably amended to include such name and then only from the time when a correspondingly amended copy is deposited as aforesaid.