The _application of the double-headed roller_ is for wounds or bleeding at the temple. After applying a compress, a piece of lint or linen should be doubled square as many times as is required, and of a size commensurate with the purpose for which it is employed. The operator takes a head of the roller in each hand, and opening the bandage a short length, commences on the opposite side to the wound, and bringing both ends round to the compress, gives them a twist, and carrying one over the top of the head and the other under the chin, makes them meet where they began, and giving another twist, carries them horizontally, one over the forehead and the other round the back of the head, meeting again over the pledget, where the same operation is to be repeated, and the ends either tied on the top of the head or pinned over the temple. The _roller bandage_ for the eye, to keep the dressings firmly in position; after making a few oblique turns over the eye and cheek, so as effectually to cover the eye, the bandage is to be doubled back and pinned in its place behind the head, and then carried horizontally round the head, to keep the oblique folds in position, and then secured by a couple of pins over the forehead. Each circle should lie, by the width of a hem, farther back than the preceding one. For injuries to the chin, a bandage, consisting of a piece of calico about six inches broad and a yard long, is to be split down each end to within four inches of the centre. The unsplit part is then applied over the dressings on the chin, the outer margin overlapping the point of the jaw; the two outer tails are then carried to the crown of the head and tied, while the inner tails are led in like manner to the forehead, and there secured. A nightcap should be worn as a precaution to make the grip of the knots more secure. A _bandage round the chest for fractured ribs_ is applied by means of a double-headed roller, which, commencing over the top of the breast-bone, is carried round to the back, and then led one over each shoulder, made to cross on the breast, passed under the armpits, cross each other at the back, and gradually tightening as they descend, cross again in front, till a sufficient depth is obtained, when one end is to be pinned over the other. But a much simpler and less elaborate bandage for fractured ribs is made out of a broad piece of jean or holland sewn tightly over in front by a strong needle and thin twine; cross straps, like braces, may be added, to keep the whole in place. When a bandage is thus adjusted, it will keep its position, without slackening, for weeks. The _bandage_ T is generally used for wounds in the groin, or as a suspensory; the cross arms of the bandage on the top of the T are passed and secured round the middle, while the long end is conveyed between the legs, brought upwards, and fastened in the front to the other part. BLISTER.