During the past few years, the many articles on new drugs in the treatment of gonorrhœa leave nothing to be desired in this way. The present article contains nothing new, but simply gives the history of a case of chronic gonorrhœa arrested by the use of peroxide of hydrogen—a drug that is going the rounds, probably to be discarded by reason of its being so unhandy and so little understood. The following case might serve to illustrate the value of peroxide of hydrogen, when used under conditions favorable to the preservation of the drug. J. H., citizen, age 23, contracted a gonorrhœa March 20, 1890, and received the usual orthodox treatment by internal medication up to July 7, 1890, the date at which the patient came under my observation. I found a subacute gonorrhœa, which was somewhat relieved by urethral injections, including the iodoformi et tannic acid injection of Dr.