The art of binding books is far older than the art of printing. The first known attempt to provide a cover by way of protection for a document was made by the workman who devised a clay case for the clay tablet-books of Babylonia, but this is as far from our notion of bookbinding as the tablets themselves are from our notion of books. Nor do the Roman bindings, which consisted of coloured parchment wrappers, come much nearer the modern conception. The ivory cases of the double-folding wax tablets or diptychs, too, of the second and third centuries, A.D., are also outside the pale, strictly speaking, but they deserve mention on account of the beautiful carving with which they are decorated, and on which some of the finest Byzantine art was expended. One of the earliest bookbinders or book-cover decorators whose name has come down to us was Dagæus, an Irish monk, and a clever worker in metals. Among the many beautiful objects in metal wrought in the old Irish monasteries were skilfully designed covers and clasps for the books which were so highly prized in the "Isle of Saints." Nor were covers alone deemed sufficient protection from wear and tear. Satchels, or polaires, such as that mentioned in Adamnan's story of the miraculous preservation of St Columba's Hymn-book, were in common use for conveying books from place to place. Very few specimens now remain, but there is one at Corpus Christi College, Cambridge, containing an Irish missal, and another, which is preserved at Trinity College, Dublin, together with the _Book of Armagh_, to which it belongs, is thus described by the Rev. T. K. Abbott, in the _Book of Trinity College_:-- "An interesting object connected with the _Book of Armagh_ is its leather satchel, finely embossed with figures of animals and interlaced work. It is formed of a single piece of leather, 36 in. long and 12½ broad, folded so as to make a flat-sided pouch, 12 in. high, 12¾ broad, and 2¼ deep. Part of it is doubled over to make a flap, in which are eight brass-bound slits, corresponding to as many brass loops projecting from the case, in which ran two rods, meeting in the middle, where they were secured by a lock. In early times, in Irish monastic libraries, books were kept in such satchels, which were suspended by straps from hooks in the wall. Thus it is related in an old legend that 'on the night of Longaradh's death all the book-satchels in Ireland fell down.'" In Ireland, too, specially valuable volumes were enclosed in a book-shrine, or cumhdach; and although, like the satchels, these cumhdachs are not bindings in the proper sense of the word, yet since they were intended for the same purpose as bindings, that is, the protection of the book, it will not be out of place to speak of them here.