In fractures of the upper or lower limb there is usually shortening, the spasmodic action of the muscles causing the broken ends to ride over each other, and the greater the obliquity of the line of fracture the greater will be the shortening and alteration in appearance. A sensation of grating is usually conveyed to the operator when he attempts to move the parts; sometimes this grating can be heard, as well as felt. Comparison of the injured with the sound limb is of the greatest importance in detecting fractures. _Treatment of Simple Fractures._ Directly a fracture of a limb is made out, a splint or splints of some kind should be applied to keep the parts fairly in position, and to prevent a broken end from being pushed through the skin. Cloths and bandages may be applied firmly round the injured part, and then extemporised splints, such as boards, straight sticks, umbrellas, or bayonets, should be applied and kept in position till the patient is in bed. Splints suitable to the injury should be now made and well covered with wool, lint, or cloth, special care being taken to pad them well where they are likely to press upon bony prominences, such as the inner or outer ankle. The limb must next be straightened, and any deformity caused by overriding of the fragments must be remedied by steady pulling upon the parts above and below the fracture, in opposite directions, and the parts brought into good position by manipulating the bones at the seat of fracture. The prepared splints, extending well below and above the fracture, are then fitted to the limb with cotton-wool or lint, and secured by bandages. If there is great swelling and tenderness of a limb, then it is advisable not to apply splints at once. Sand pillows should be made, or stockings nearly filled with sand and their mouths tied, and applied one on either side of the limb, to keep it absolutely still; the painful swelling may be reduced by applying ice or evaporating lotions. When the swelling is somewhat reduced, splints may be applied after proper manipulation. Whilst the bandages should be firmly applied so as to keep the splints in position, they must not be bound too tightly, otherwise swelling and ulceration may be caused. If there is much pain and swelling after a fracture has been set, it will be necessary to loosen the bandages. Union of the fractured bones is generally completed in about six weeks. _Collar-bones._—Fracture of the collar-bone should be treated by placing a large wedge-shaped pad (about six inches long, by three in thickness at the upper end) in the armpit, and securing it with tapes tied over the opposite shoulder. The elbow should then be brought forward, and raised and well supported by a broad triangular bandage or handkerchief, used as a sling, and with the ends tied over the opposite shoulder. A flannel or other bandage should then be wound round the chest, so as to secure the arm from accidental movements.