Carl Rogers Darnall

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Brigadier General Carl Rogers Darnall, Doctor of Medicine (December 25, 1867, Weston, Texas, USA - January 18, 1941, Walter Reed General Hospital, Washington, DC, USA) was a U.S. Army chemist and surgeon credited with originating the technique of liquid chlorination of drinking water. It has been plausibly asserted that more lives have been saved and more disease prevented by this contribution to sanitation than by any other single achievement in medicine or public health.

Biography Youth and education Darnall was born on his father’s farm in the Cottage Hill, Texas community near McKinney, Texas, in Collin County, Texas. He was the eldest of the seven children of Reverend Joseph Rogers Darnall, minister of the Christian Church, and Mary Ellen (Thomas) Darnall.

He studied at Carlton College, Bonham, Texas, and Transylvania University, Lexington, Kentucky and received a medical degree from Jefferson Medical College, Philadelphia (1890). In 1892 he married Annie Estella Major of Erwinna, Pennsylvania. In 1896, after a few years of private practice, he was commissioned a first lieutenant and assistant surgeon in the U.S. Army. He was graduated from the Army Medical School in Washington the following year.

Early career Darnall’s first assignments were to stations in Texas – Fort Clark at Brackettville, Texas, and Fort McIntosh at Laredo, Texas. During the Spanish-American War (1898), Darnall served in Cuba. Later, he served as an operating surgeon and pathologist aboard the hospital ship USS Relief (1896) in the Philippines and commanded the hospital at Iloilo City. He was one of the few medical officers that accompanied the Allied Forces during the Boxer Rebellion in China.

Chlorination In 1902, Darnall returned to Washington, D.C., and served as secretary of the faculty and instructor for sanitary chemistry and operative surgery at the Army Medical School. It was while a Major and a professor of chemistry there that he discovered the value of liquefied chlorine in purifying water for use by troops in the field. His 1910 invention, the mechanical liquid chlorine purifier, was the prototype of the technology that is now applied to municipal water supplies throughout the world. Darnall also devised and patented a water filter that was used by the Army for many years. Major William J. L. Lyster further adapted the process of water chlorination to field use by inventing a method to apply sodium hypochlorite in a cloth bag (the “Lyster bag”).

Later career Darnall was promoted to Colonel in 1917. During World War I, Darnall’s talents for business and organization were recognized and he was assigned to the Finance and Supply Division in the Office of The Surgeon General. After the war, he served as department surgeon in Hawaii. In 1925, he returned to the OTSG as executive officer. In November (or December 5?), 1929, he was promoted to brigadier general and became the Commanding General of the Army Medical Center, a post he held until he retired on Dec. 31, 1931.

Darnall died on 18 January 1941. Six days earlier, his wife had died at the family home in Washington. They left three sons, Joseph Rogers (1894-1976), William Major (b. 1895), and Carl Robert (b. 1904), all of whom served in some capacity in the Army. He is buried in the Arlington National Cemetery in Arlington, Virginia.

Awards and honors Darnall was a fellow of the American College of Surgeons, a member of the American Medical Association and Association of Military Surgeons of the United States. He was a veteran of the Military Order of the Carabao, member of the Army and Navy Club of Washington, and Founder Member of the Army and Navy Country Club. Darnall received the Distinguished Service Medal for his organizing, developing and administering medical supplies during World War I.

Legacy

Darnall Army Community Hospital, (recently redesignated the Carl R. Darnall Army Medical Center), Fort Hood, Killeen, Texas is named in honor of Darnall.

References

Darnall C.R. (1911), "The Purification of Water by Anhydrous Chlorine", Journal of the American Public Health Association; 1: 783–97.

External links

Darnall’s New York Times obituary