Miscarriages, Premature Births, and Still-Births.—The statistical data regarding miscarriages, premature births, and still-births are somewhat untrustworthy. There is no general agreement as to the precise signification of these terms among the medical practitioners, coroners, and registrars of any one country—not to speak of differences in these matters in different countries; and this difficulty applies above all to the matter of still-births. In some countries, children dying during the act of birth or within a few hours after birth are regarded as born alive, but in others as still-born. When we are comparing the birth-rate and the death-rate in different countries, these causes of error must not be forgotten.