_Clavicle._--The clavicle is generally straighter, and proportionably smaller in the female than in the male. The greater straightness depends particularly on the lesser curve of its external portion, while in man it extends far backward, and then comes forward. The internal anterior half presents nearly the same curve in both sexes. The clavicle of the female is rounder than that of the male; we however find clavicles of females perfectly like those of males, and _vice versa_. Sometimes, of the two clavicles in the same body, one is constructed in the type of the male, and the other in that of the female. _Pelvis._--The chief points of difference between the male and female skeleton, beside the disparity in the size and the greater smoothness of the bones, lie in the _pelvis_. In the female this is less strong and thick, and contains less osseous matter than that of the male. In the female, the arch of the _pubis_ is much the greatest, and the long diameter of the brim of the pelvis is from side to side; in the male it is from before backward; in the female, the brim is more of the oval shape, in the male more triangular; in the female, the _ilia_ are more distant; the tuberosities of the _ischia_ are also more remote from each other, and from the _os coccygis_, and as these three points are farther apart, the notches between them are consequently wider, and there is of necessity a considerably greater space between the _os coccygis_ and _pubis_ than in the male. The female _sacrum_ is broader and less curved than in the other sex. The ligamentous cartilage at the symphysis pubis is broader and shorter. In consequence of the cavity of the pelvis being wider in woman, the superior articulations of their thigh bones are farther removed from each other, which circumstance occasions their peculiarity in walking; they seem to require a greater effort than men to preserve the centre of gravity, when the leg is raised; owing to the greater length of the crural arch, there is less resistance to the pressure of the abdominal viscera; consequently females are more subject to femoral hernia than males. The angle of union of the ossa pubis in the male is from sixty to eighty degrees, whereas, in the female it is ninety degrees. The mean height of the male, at the period of maturity, is about five feet eight and a half inches, and that of the female about five feet five inches; a well-formed pelvis has a circumference equal to one-fourth of the height of the female. ORGAN OF VOICE.