6. A certain constitutional alarm or shock follows every serious wound, the continuance of which excites a suspicion of its dangerous nature, which nothing but its subsidence, and the absence of symptoms peculiar to the internal part presumed to be injured, should remove. The opinion given under such circumstances should be very guarded; for if this symptom of alarm should continue, great fears may be entertained of hidden mischief. Colonel Sir W. Myers was shot, at Albuhera, at the head of the Fusilier Brigade, at the moment of victory, by a musket-ball, which broke his thigh, and lodged. The continuance of the alarm and anxiety satisfied me it had done other mischief. He died next morning, of mortification of the intestines. General Sir Robert Crawford was wounded at the foot of the smaller breach at the storming of Ciudad Rodrigo, by a musket-ball, which entered the outer and back part of the shoulder, and came out at the axilla. There was a third wound, a small slit in the side, apparently too small to admit a ball. The continuance of the anxiety and alarm pointed out some hidden mischief, which I declared had taken place; and when he died his surgeon found the ball loose in his chest. It had been rolling about on his diaphragm. Surgery was not sufficiently advanced in those days to point out the situation, or to authorize an attempt for the removal of the ball. It must in future be done. This constitutional alarm and derangement are not always present to so marked an extent. A soldier at Talavera was struck on the head by a twelve-pound shot, which drove some bone into, and some brain out of his head: he was walking about, complaining but little, immediately after the accident, although he died subsequently. 7. It is not always possible, from their appearance, to decide which opening is the entrance, which the exit of an ordinary sized round ball; or when two holes are distant from each other, to ascertain whether they have been caused by one, or by two distinct balls. When a ball is not impinging with much impetus, it may become a penetrating, without being much of a contused wound, which will close in and heal with little suppuration. If the ball do not press upon, or interfere with some important part, the slight degree of irritation which follows may give rise to the formation of a sac, which adheres to it and possibly keeps it quiet for years, if not for life. 8. The wound made by the entrance of an ordinary musket-ball is usually circular, depressed, of a livid color, and capable of admitting the little finger, the exit being more ragged, and not depressed. It is sometimes little more than a small slit or rent, although at others, as in the face or in the back of the hand, it may be much torn, giving to an otherwise simple wound a more frightful appearance, such as is not usually seen in the thigh, or other equally firm fleshy part.