Educated at University College, London, where he was Obstetrical and Ophthalmic Assistant, and in Paris. He was connected for a long time with the Metropolitan Hospital, and became Consulting Physician. He was also at one time Physician to the North London Hospital for Consumption and to the Farringdon Dispensary, and was Consulting Physician to the latter at the time of his death. Early attracted to the study of syphilis, he was led to investigate prostitution. These studies converted him to Malthusianism, of which he was an apostle. He was President of the Malthusian League, and he held his opinions honestly and defended them stoutly; a meed of respect cannot be withheld from one who sacrificed much in fighting for a cause which did not commend itself to the majority of his profession. He was also Physician to the Rescue Society of London. He died at his residence, 28 Carson Road, West Dulwich, SE, on December 2nd, 1907. Publications: "Alpine Heights and Climate in Consumption." - *St. Andrews Med. Grad. Jour.*, 1868. *On the Treatment of Syphilis and other Diseases without Mercury: being a collection of evidence to prove that mercury is a cause of disease, not a remedy*. 8vo, London, 1863. French translation of foregoing, 1864. German translation (Vienna), 1868. *Remarks on the Antecedents and Treatment of Consumption*, 8vo, London, 1865. "Prostitution Medically Considered: with some of its Social Aspects." A Paper read at the Harveian Society of London. With a Report of the Debate. 8vo, London, 1866. *On Cholera: its Nature and Treatment*. Being the Debate in the Harveian Society of London, edited by Dr. C. DRYSDALE, 8vo, London, 1866. *Recent Views as to the Causes and Nature of Pulmonary Consumption*, 8vo, London, 1868. "On the Inadequacy of Emigration as a Remedy for European Overcrowding and Destitution." Paper read before the London Dialectical Society, May 28th, 1869. London, 1869. *Medicine as a Profession for Women*, 16mo, London, 1870. *Syphilis: its Nature and Treatment. With a Chapter on Gonorrhea*. 8vo. London, 1872; 4th ed., 1880. German translation of 4th edition, 1882. "The Population Question at the Medical Society of London; or, the Mortality of the Rich and Poor." A Paper read at the Society, with the Debate, edited by CHARLES R. DRYSDALE, 12mo, London, 1879. "Debate on Infanticide, at the Harveian Society of London," May 17th, 1866, edited by C. DRYSDALE, 12mo, London, 1866; reprinted from the *Med. Press and Circ*. "Overpopulation considered a sa Prominent Cause of Misery and Early Death" (nd). "Report of the Committee for the Prevention of Venereal Diseases" (with J. BRENDON CURGENVEN ) read before the Harveian Society of London, July 1st, 1867. 8vo, London, 1867.