Vaccine in Typhoid Fever.--Inasmuch as typhoid fever has played an important part in the conduct of all wars, it has always been a source of much careful study by military and naval surgeons in every civilized country in the world. We had not, however, reached a stage when it was possible to hope for its extermination until medical science began to appreciate the possibilities of vaccine therapy. The Cuban, Boer and Russian wars, because of the terrible experiences of the soldiers with typhoid in each of them, stimulated inquiry along the line of discovering a serum of vaccine that would be effectual against it. American, British, French and Japanese military and naval surgeons instituted experiments simultaneously to discover an anti-typhoid vaccine. In the fall of 1909, American army surgeons were experimenting with a serum at Washington and on Governor's Island with success, but the first public announcement of an absolutely successful vaccine was made by Captain Vincent of the French navy on June 20th, 1910, before the Academie de Medicine in Paris. The final success of the anti-typhoid serum has been conclusively proved by elaborate tests upon soldiers and sailors in many nations. It is difficult for the ordinary individual to appreciate the significance and importance of a discovery of this character and magnitude. When one thinks calmly of the thousands and thousands of men who have lost their lives during wars because of typhoid epidemics, and of the thousands of others who have returned home practically invalided for life from the same cause, it is possible to, at least, conceive of the benefit to the race such a discovery promises. And when we learn that the discovery is a product of the same principle or method which gave to the world a cure for smallpox, diphtheria and syphilis, we must begin to believe that the medical profession is on the path which is unlimited in its field of promise so far as efficient treatment is concerned. Yet to-day we have people who do not believe in vaccination or in anti-diphtheritic serum. We may not live to see the time, but it is not far distant in the opinion of men qualified to speak with authority, when every disease will be amenable to the serum therapy, and when drugs will virtually be discarded by the human race. "606."--One of the most important discoveries in the history of medicine was recently given to the world by Dr. Paul Ehrlich. He called it "606," because it was the 606th experiment he had made with the same end in view. It was designed with the purpose of curing the most terrible disease known to man, syphilis. The name of the remedy is salvarsan. That it will do all that was first claimed for it is still doubtful, but salvarsan and its improvements, neosalvarsan, etc., are accepted by the profession as by far the best treatment yet devised for this dread disease. It points the way for improvement along the same line to an ultimate specific.