"E tuit orent fet cognoissances, Ke Normant altre conéust, Et k'entreposture n'éust. Ke Normant altre ne férist, Ne Franceiz altre n'océist."--_Line_ 12,816. The particular nature of the sign of recognition intended by the chronicler, it is in vain now to inquire. The note of M. Pluquet on the passage gives "Signes de convention." The Lance-flag is found throughout the period now under notice. Many examples occur in the Bayeux tapestry, and in the royal and baronial seals of the time. The usual device upon it is a cross, a square, a number of rounds, or stripes of different colours; or the streamer is of a single tint. It is dentated in two or more cuts, and sometimes fringed at the edge. See our engraved examples. The Musical Instruments used in war were the horn, the trumpet, and a variety of the latter called the _graisle_. Wace mentions all these in his account of the battle of Hastings:-- "Dez ke li dous ost[235] s'entrevirent, Grant noise è grant temulte firent. Mult oïssiez graisles soner, E boisines è cors corner."--_Line_ 13,135. The horn of battle of this period is very clearly figured on folio 25 of Harleian MS. 603, a work of the close of the eleventh century. It is of the common semicircular form. The trumpet (boisine: buccina) is found, though in a monument of somewhat later date, on the inscribed slab of "Godefrey le Troumpour," now preserved in the library of the London Guildhall[236]. Compare also our woodcut, No. 73. The graisle (from _gracilis_) was, as its name indicates, of a slender form; its exact fashion has not been ascertained. The Horse-furniture presents some new features; especially in the arming of the steed in chain-mail, a practice which appears to have originated towards the close of the twelfth century. Wace indeed tells us that William Fitz-Osbert, at the field of Hastings, rode a steed thus accoutred:-- "Vint Willame li filz Osber, Son cheval tot covert de fer."--_Line_ 12,627.