28 at 50 years of age, 3 at 57 years of age, 18 " 51 " " " 3 " 58 " " " 18 " 52 " " " 1 " 59 " " " 11 " 53 " " " 4 " 60 " " " 13 " 54 " " " 4 " 62 " " " 5 " 55 " " " 3 " 63 " " " 4 " 56 " " " These statistics were from examination of 6000 cases of menstruating women. The last seven were found to be in women in the highest class of society. Mehliss has made the following collection of statistics of a somewhat similar nature-- Late Dentition. Late Late Male. Female. Lactation. Menstruation. Between 40 and 50 0 4 0 0 " 50 " 60 1 4 2 1 " 60 " 70 3 2 1 0 " 70 " 80 3 2 0 7 " 80 " 90 6 2 0 0 " 90 " 100 1 1 0 1 Above 100 ..... 6 1 0 1 -- -- -- -- 20 16 3 10 These statistics seem to have been made with the idea of illustrating the marvelous rather than to give the usual prolongation of these functions. It hardly seems possible that ordinary investigation would show no cases of menstruation between sixty and seventy, and seven cases between seventy and eighty; however, in searching literature for such a collection, we must bear in mind that the more extraordinary the instance, the more likely it is that it would be spoken of, as the natural tendency of medical men is to overlook the important ordinary and report the nonimportant extraordinary. Dewees mentions an example of menstruation at sixty-five, and others at fifty-four and fifty-five years. Motte speaks of a case at sixty-one; Ryan and others, at fifty-five, sixty, and sixty-five; Parry, from sixty-six to seventy seven; Desormeux, from sixty to seventy-five; Semple, at seventy and eighty seven; Higgins, at seventy-six; Whitehead, at seventy-seven; Bernstein, at seventy-eight; Beyrat, at eighty-seven; Haller, at one hundred; and highest of all is Blancardi's case, in which menstruation was present at one hundred and six years. In the London Medical and Surgical Journal, 1831, are reported cases at eighty and ninety-five years. In Good's System of Nosology there are instances occurring at seventy-one, eighty, and ninety years. There was a woman in Italy whose menstrual function continued from twenty-four to ninety years. Emmet cites an instance of menstruation at seventy, and Brierre de Boismont one of a woman who menstruated regularly from her twenty-fourth year to the time of her death at ninety-two.