+Utilization of Personal Prophylaxis.+--Passing now to the debatable elements in a public campaign, opinion about the value of personal prophylaxis (Metchnikoff) against syphilis shows interesting variations in different countries at the present time. English-speaking countries hesitate over this. On the other hand, eminent German authorities, such as Neisser and Blaschko, urged it at the outset of the present war, and their views have apparently overcome a vigorous opposition. As a result, the knowledge of methods of preventing venereal infection are being spread broadcast over Germany in the hope of diminishing the inevitable risk that will arise with the disbanding of armies after peace is concluded, no matter how stringent the precautions taken to insure the health of soldiers before their return to civil life. The results of this experiment will be watched with the most intense interest by all those familiar with the situation, and the results will be of value as a guide for our own policy when we have had time to develop one. It is interesting that the most radical departure in the way of legislative provision for sexual disease, that of West Australia, takes up the patient at the point where his infection begins and promptly places him under penalty in the hands of a physician, but assumes no responsibility for other than indirect prevention. The most radical of all present-day legal measures against the disease has therefore not yet reached the radicalism of compulsory prophylaxis as it exists in armies, or even the radicalism of compulsory vaccination for smallpox.