Next after the ordinary "ducal coronet" the one most usually employed is the mural coronet (Fig. 657), which is composed of masonry. Though it may be and often is of an ordinary heraldic tincture, it will usually be found "proper." An exception occurs in the case of the crest of Every-Halstead ["Out of a mural coronet chequy or and azure, a demi-eagle ermine beaked or."] Care should be taken to distinguish the mural crown from the "battlements of a tower." This originated as a modern "fakement" and is often granted to those who have been using a mural coronet, and desire to continue within its halo, but are not qualified to obtain in their own persons a grant of it. It should be noticed that the battlements of a tower must always be represented upon a wreath. Its facility for adding a noticeable distinction to a crest has, however, in these days, when it is becoming somewhat difficult to introduce differences in a stock pattern kind of crest, led to its very frequent use in grants during the last hundred years. Care should also be taken to distinguish between the "battlements of a tower" and a crest issuing from "a castle," as in the case of Harley; "a tower," as in that of Boyce; and upon the "capital of a column," as in the crests of Cowper-Essex and Pease. Abroad, _e.g._ in the arms of Paris, it is very usual to place a mural crown over the shield of a town, and some remarks upon the point will be found on page 368. This at first sight may seem an appropriate practice to pursue, and several heraldic artists have followed it and advocate it in this country. But the correctness of such a practice is, for British purposes, strongly and emphatically denied officially, and whilst we reserve this privilege for grants to certain army officers of high {377} rank, it does not seem proper that it should be available for casual and haphazard assumption by a town or city. That being the case, it should be borne in mind that the practice is not permissible in British armory. The naval coronet (Fig. 658), though but seldom granted now, was very popular at one time. In the latter part of the eighteenth and the early part of the nineteenth centuries, naval actions were constantly being fought, and in a large number of cases where the action of the officer in command was worthy of high praise and reward, part of such reward was usually an augmentation of arms. Very frequently it is found that the crest of augmentation issued from a naval coronet. This is, as will be seen, a curious figure composed of the sail and stern of a ship repeated and alternating on the rim of a circlet. Sometimes it is entirely gold, but usually the sails are argent. An instance of such a grant of augmentation will be found in the crest of augmentation for Brisbane and in a crest of augmentation granted to Sir Philip Bowes Broke to commemorate his glorious victory in the Shannon over the American ship _Chesapeake_. [Illustration: FIG. 658.--Naval crown.]