Both a cross and a saltire are sometimes described as "cantonned" by such-and-such charges, when they are placed in the blank spaces left by these ordinaries. In addition, the spaces left by a cross (but not by a saltire) are frequently spoken of _e.g._ as the dexter chief canton or the sinister base canton. {136} The canton is frequently used to carry an augmentation, and these cantons of augmentation will be referred to under that heading, though it may be here stated that a "canton of England" is a canton gules, charged with three lions passant guardant or, as in the arms of Lane (Plate II.). The canton, unless it is _an original charge_, need not conform to the rule forbidding colour on colour, or metal on metal; otherwise the canton of Ulster would often be an impossibility. The canton, with rare exceptions, is always placed in the dexter chief corner. The canton of augmentation in the arms of Clerke, Bart.--"Argent, on a bend gules, between three pellets as many swans of the field; on a sinister canton azure, a demi-ram salient of the first, and in chief two fleurs-de-lis or, debruised by a baton"--is, however, a sinister one, as is the canton upon the arms of Charlton. In this latter case the sinister canton is used to signify illegitimacy. This will be more fully dealt with in the chapter upon marks of illegitimacy. A curious use of the canton for the purposes of marshalling occurs in the case of a woman who, being an heiress herself, has a daughter or daughters only, whilst her husband has sons and heirs by another marriage. In such an event, the daughter being heir (or in the case of daughters these being coheirs) of the mother, but not heir of the father, cannot transmit as quarterings the arms of the father whom she does not represent, whilst she ought to transmit the arms of the mother whom she does represent. The husband of the daughter, therefore, places upon an escutcheon of pretence the arms of her mother, with those of her father on a canton thereupon. The children of the marriage quarter this combined coat, the arms of the father always remaining upon a canton. This will be more fully dealt with under the subject of marshalling. The canton has yet another use as a "mark of distinction." When, under a Royal Licence, the name and arms of a family are assumed where there is no blood descent from the family, the arms have some mark of distinction added. This is usually a plain canton. This point will be treated more fully under "Marks of Cadency."