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Hartshorn Memorial Cannon
The Hartshorn Memorial Cannon is a decommissioned American Civil War naval cannon that forms the centerpiece of the South Lyndeborough Village Common in Lyndeborough, New Hampshire. The cannon is named for John Alonzo Hartshorn, the town's second Civil War casualty and a former member of the town's Lafayette Artillery Company.
== Description ==
Prior to 1900, the Hartshorn Cannon saw service as a naval piece during the Civil War at Fort Constitution in New Castle, New Hampshire, and is believed to have remained there until substantial changes were made to the fort in the late 1890s. The black thirty-pounder Parrott rifle is approximately long, weighs , and was made at West Point Foundry in New York. Currently it sits on a low granite base which probably dates from about 1902. When in use, it was capable of firing shells with a munition charge of a maximum distance of , with a flight time of 27 seconds. Typically, nine people were required to operate it. The Hartshorn Cannon's use as a naval gun is suggested by an anchor insignia inscribed near the base of its barrel. Inscribed on the cannon is the letter-number combination "R.P.P. No. 140 3495 LBS," probably indicating the inventor (New Hampshire native Robert Parker Parrott), order of manufacture, and weight of the cannon. Additionally, the year of manufacture (1862) and classification ("30 PDR") are indicated on one side of the gun, and the initial "P" is engraved on the other.〔Roper and Roper, ''Citizen Soldiers'', p. 79〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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