Chicago has suffered a loss by the resignation of the Commissioner of the Health Department, Dr. Oscar C. De Wolf, who, through his official services as Health Officer for the past thirteen years, has contributed so much to the well-being of its citizens, and, at the same time, has gained for himself a National reputation as a man able to successfully grapple with all the difficulties besetting such a position, political and sanitary. The Sanitary News, editorially referring to his resignation, says: "He has practically created the Health Department of this city.....He has demonstrated fully his ability to preside in this capacity by his efficient ministration in a field of so great magnitude, confronting him with so many and so great difficulties. Whatever his future labors may be, his gain will not be so great as the city's loss, but in whatever field his efforts may be directed, we trust