=Concerning Wounds in general.=--Great care must be taken to ascertain the exact site and course of the injury on the body, as this precaution will greatly assist in answering the questions: _Is the wound dangerous to life?_ _Does it cause grievous bodily harm?_ _Is it suicidal, that is, inflicted by the person on himself; or homicidal, inflicted by another?_ The solution of the question of the dangerous character of the wound is left to the professional knowledge of the witness, who may be required to state his reasons for considering the wound dangerous to life. His mere assertion will not be accepted. “The safest course,” says Elwell, “for the witness, in regard to all these questions, is to give a true and plain account of the wound, describing it minutely, and the probable consequences that may attend it.” In relation to their danger to life (apart from so-called “simple” wounds which are not usually extensive, heal easily, and cause little trouble in their course), wounds may be considered dangerous to life when they are so extensive, or on account of their position and relation to important structures when they would prove fatal without the intervention of surgical skill; and when the danger is _imminent_. A _mortal_ wound is one which is rapidly followed by death. Wounds, however, which in themselves could not be regarded as dangerous to life, may become so by intercurrent complications, such as erysipelas or other infective process. As a general rule, only those wounds in which the danger to life is _imminent_ should be stated as dangerous to life. Compound fracture of the bones of the cranium, injury to any large arterial trunk, or to any of the internal organs, may be considered as “dangerous to life”; but where the danger is more remote, as in the probable supervention of tetanus, erysipelas, &c., the medical opinion must be more guarded. But the medical witness should always bear in mind that death may follow the slightest injury. A case is recorded of death in forty-eight hours after extraction of a tooth. The contrary also holds good, for the most fearful injuries have been followed with recovery. The following suggestions may help the practitioner in the formation of his opinion as to the probable danger of a wound: 1. The extent of the injury. 2. The character of the instrument used in the infliction of the wound. 3. The violence suffered by the parts. 4. The size and importance of the blood-vessels and nerves injured. 5. Is the wound healing or likely to heal well, and is the constitutional disturbance severe or slight? 6. Age of the sufferer. 7. Is there any constitutional taint likely to render even a slight wound more severe, or even dangerous to life? 8. Has the previous medical treatment been skilful or otherwise? Should the injured party be found dead, a careful _post-mortem_ examination will alone determine the probable part the injury bore in the production of the fatal result.