1820 - Born on May 15th in Brown County, Ohio. American naval officer and author.
1834 - He was appointed midshipman on July 7th, and ordered to West Point, where he studied for three months, under his brother Jacob Ammen, later a brigadier general in the United States Army.
1849 - He was appointed lieutenant on November 4th.
1869 - He was chief of the Bureau of Yards and Docks.
1871 - He was chief of the Bureau of Navigation until his retirement.
1872 - He was appointed member of a commission to examine and report on the feasibility of constructing a canal through Nicaragua.
1877 - He became rear admiral on December 11th.
1879 - He was sent as a delegate to a congress in Paris to discuss Isthmian canal questions.
1883-1891 - Among his works are "The Atlantic Coast" (New York); "Recollections of Grant"; "The Old Navy and the New" (autobiographical); "Country Homes and Their Improvements"; "Fallacies of the Interoceanic Transit Questions," and various contributions to current literature.
1898 - Died on July 11th in Washington, D.C.
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