With a new kind of vaccination, men who go to war can be turned into walking factories of lockjaw antitoxin, ready to fight off lockjaw, or tetanus, if they are wounded. Such protection has been made possible by the development of a tetanus toxoid made directly from the germs themselves, instead of from horse serum which sometimes catises so-called serum sickness. It is effective either when given at the time of injury or in advance as a protective measure, guarding likewise against danger of lockjaw from such peacetime accidents as automobile mishaps, Fourth of July hurns and rusty-nail wounds.