The cross bottonée (Fig. 117) is sometimes thought to be a corruption of the cross crosslet, whose corners are frequently rounded in early examples, or it may indeed have been designed to represent buds, as old armorists say, and if so is a perfectly intelligible and expressive symbol.
Crosses pomell (Fig. 118), urdée or clichée (Fig. 119), potent (Fig. 120), furchée (Fig. 121), are some of a large number of crosses that are but rarely used.
The cross tau, derived from the Greek letter of that name, is the cross of St. Anthony (Fig. 122).
Fig. 120.—Cross Potent.
Fig. 121.—Cross Furchée.
Fig. 122.—Cross Tau.
Crosses may at any time be represented as in relief, which again may be accented by means of a central arris or ridge which gives lines of light and shade; and this treatment is especially suitable to metal work, as is witnessed by many beautiful examples on church bells among other things.