Tetanus Antitoxin. - Not official. - This is prepared on the same principles as diphtheria antitoxin, and is administered in the same way or directly into the brain. No marked success has attended its use, perhaps because tetanus is not usually recognized till long after infection, and perhaps because the tetanus toxin is very firmly united with the proteids of the central nervous system. Recent reports indicate that this Antitoxin, particularly when injected directly into the brain, will soon take its place as a valuable and trustworthy remedy for this disease.