of procreating children are both considerably greater in cases of long-enduring intimacy than where there are numerous, brief, frequently-changed sexual relationships. (_d_) It is altogether exceptional for marriage to exercise a curative influence upon the progress of a disease, and this probability is one which can never be counted upon. Once the marriage is contracted, sexual intercourse and the procreation of children cannot be prevented. (_f_) As regards persons suffering from tuberculosis and alcoholism, the reverse of what was stated in objection (_f_) is definitely established. (_h_) The data available as to the immunising influence of inherited diseases against the same diseases accidentally acquired (_e.g._ of congenital syphilis against acquired syphilis) are extremely debatable. They seem, indeed, to show provisionally that such an immunising effect is non-existent. The question of regeneration is still obscure, and requires thorough investigation. It is certainly possible that in some cases intermarriage between the diseased and the healthy may lead, not to the deterioration, but to the improvement of the race, owing to the fact that thereby favourable elements are introduced into the family. The principal argument against this idea of regeneration is that, from marriages in which both parties are healthy, healthier offspring unquestionably result, than from marriages in which one or both parties are diseased. The resulting postulate is, that the healthy should marry the healthy. _How to Effect Reforms._--No general rules can be formulated regarding the marriage of persons suffering from disease. The majority of diseases are of such a nature that their existence can be established only by means of direct medical examination. In most cases, medical examination will not justify the assertion that the particular person must be altogether forbidden to marry, but only that this particular person ought not to marry some other specifically indicated individual; should the question arise regarding another proposed marriage (that is to say, with a different individual), then a fresh medical examination will be desirable. For example, we cannot lay it down as a general rule that the marriage of persons suffering from tuberculosis must be unconditionally forbidden; all we are able to say is, that when anyone suffering from tuberculosis desires to marry, that person ought first to submit to a thorough medical examination. It is therefore necessary that prior to marriage there should be a medical examination made by one of a number of doctors officially appointed for this purpose. As a result of their examination, these officials will give an opinion, whether the marriage of the person they have examined with some other person specifically named is or is not desirable in the interest of the common weal.