A cannon from the time of Cortez. “It will be observed that the pieces have no trunnions, and are supported in a kind of trough. They were breech-loaders by means of chambers, three of which, with handles, are seen (in the cut) lying on the ground, and one is in place, in the gun on the right. In the Naval Museum at Annapolis there are guns captured to be the ones used by Cortes. A search of the records of the Ordnance Department at Washington, instituted for me by Commodore Sicard, at the suggestion of Prof. Charles E. Munroe of the Naval Academy, has not, however, revealed any documentary evidence; but a paper in the Army and Navy Journal, Nov. 22, 1884, shows such guns to have been captured by Lieutenant Wyse in the ‘Darien.’ The guns at Annapolis are provided with like chambers, as seen in photographs kindly sent to me. Similar chambers are now, or were recently, used in firing salutes on the Queen’s birthday in St. James’ Park.” — Winsor, 1886.
Narrative and Critical History of American (New York: Houghton, Mifflin, and Company, 1886)II:352