60. The points to be attended to for ascertaining the probable degree of maturity of the child are: The general appearance and development, the state of the skin, its secretions, and its appendages; the hair and nails; the presence or absence of the pupillary membrane; the length and weight of the whole body; whether the navel corresponds or not with the middle of the length of the body; the situation of the meconium in the intestines; the size of the testicles in the case of males, and in either sex the size of the point of ossification in the lower epiphysis of the thigh-bone. This is easily observed by making an incision across the front of the knee into the joint, pushing the end of the thigh-bone through the cut, slicing off the cartilaginous texture carefully until a coloured point is observed in the section, and then, by successive very fine slices, ascertaining the greatest diameter of the bony nucleus. This does not exist previous to the thirty-sixth week of gestation, and in a mature child is about one-fourth of an inch in diameter. Has the infant been washed? Absence or presence of vernix caseosa. Nature and character of the wrappings, if any, found on the child. 61. The points of chief importance in reference to the period which has elapsed after death are those specified in the last clause of Sect. 17--it being borne in mind that the bodies of infants are often concealed in ash-pits and dunghills, and that in these circumstances putrefaction is very rapid. [Illustration: Plate.--Section through the epiphysis of the lower end of the femur showing ossification centre, in a full-term fœtus.] 62. The circumstances which indicate whether the child died before, during, or after parturition, and how long after it, are the signs of its having undergone putrefaction within the womb; the marks on the crown, feet, buttocks, shoulders, &c., indicating presumptively the kind of labour, and whether it was likely to have proved fatal to the child; the state of the lungs, heart, and great vessels, showing whether or not it had breathed; the nature of the contents of the stomach and of the intestines; the presence of foreign matters in the windpipe; the state of the umbilical cord, or of the navel itself, if the cord be detached.