On 12th March 1762, a Royal Warrant was granted directing Lyon to add a "double tressure counterflowered as in the Royal arms of Scotland" to the arms of ARCHIBALD, Viscount PRIMROSE. Here the tressure was _gules_, as in the Royal arms, although the field on which it was placed was _vert_. In a later record of the arms of ARCHIBALD, Earl of ROSEBERY, in 1823, this heraldic anomaly was brought to an end, and the blazon of the arms of Primrose is now: "Vert, three primroses within a double tressure flory counterflory or." (See Stodart, "Scottish Arms," vol. i. pp. 262, 263, where mention is also made of an older {146} use of the Royal tressure or, by "ARCHBALD PRIMROSE of Dalmenie, Knight and baronet, be his majesty CHARLES ii. create, _Vert, three primroses within a double tressure flowered counter-flowered or_.") Another well-known Scottish instance in which the tressure occurs will be found in the arms of the Marquess of Ailsa (Fig. 229). Two instances are known in which the decoration of the tressure has differed from the usual conventional fleurs-de-lis. The tressure granted to Charles, Earl of Aboyne, has crescents without and demi-fleurs-de-lis within, and the tressure round the Gordon arms in the case of the Earls of Aberdeen is of thistles, roses, and fleurs-de-lis alternately. The tressure gives way to the chief and canton, but all other ordinaries are enclosed by the tressure, as will be seen from the arms of Lord Ailsa. [Illustration: FIG. 229.--Armorial bearings of Sir Archibald Kennedy, Marquess of Ailsa: Argent, a chevron gules between three cross crosslets fitchée sable, all within a double tressure flory and counter-flory of the second. Mantling gules, doubled ermine. Crest: upon a wreath of his liveries, a dolphin naiant proper. Supporters: two swans proper, beaked and membered gules. Motto: "Avise la fin." (From the painting by Mr. Graham Johnston in the Lyon Register.)] THE LOZENGE, THE FUSIL, THE MASCLE, AND THE RUSTRE