10. _Of the Body itself_, the parts deserving of particular examination are the natural openings of the ears, nose, mouth, anus and female genitals; the neck and the hands. In the _internal_ examination or dissection, the three great cavities—the head, thorax and abdomen—should all be opened. In some cases, it may be important to open also the spinal canal. The first thing to be observed on opening each of these cavities, is the position of the organs they contain; next, whether there be any fluid effusions present; and lastly, the external and internal appearance of each separate organ. In every case, that cavity should be opened first, in which there is the greatest probability of finding the cause of death. In the case of new-born children, however, the abdomen must be first opened in order that the natural position of the diaphragm may be observed undisturbed. In examining the base of the skull for injuries, we must not omit to remove the periosteum, which might otherwise conceal small fissures. In examining the thoracic organs, if it be particularly desired to observe the amount of blood contained in them, and we do not wish to apply ligatures, we examine the heart first, leaving it in its natural horizontal position, and opening it by a lateral longitudinal incision on both sides. This gives us a distinct idea of the actual amount of blood in all the cardiac cavities. The lungs are next cut into, and last of all the large blood-vessels. This procedure is to be followed, _e. g._, in cases of suffocation, where it is of particular importance to determine the amount of blood in these organs, and where the blood is peculiarly fluid. In determining the amount of blood in the venous trunks, it will be sufficient to examine the _vena cava ascendens_. In penetrating wounds, the wound is of course to be examined as far as possible before disturbing any of the organs. The result of the external and internal examinations, thus thoroughly conducted, are to be noted down at the time, and are not to be trusted to memory. It is of the utmost importance that this rule be observed. In presenting a written or verbal report before court, the physician should be careful to furnish merely a description of the post-mortem appearances, and not to give an opinion as to their probable or possible cause or causes, unless called upon to do so. He should also avoid prolixity and, as much as possible, the use of technical terms, unintelligible to nonprofessionals. His answers to direct questions should be concise and decided if possible, but where this is not possible, he should not hesitate to state that the dissection has not afforded him any facts which could enable him to give a positive answer. 2. Questions relating to New-Born Children.