The annexed engravings are views of im- I provements in breech loading fire-arms invented by Wm. W. Marston, of this city, auc fdr which a patent was granted on the 8th of January (1851,) also the ...

This early 16th century cast iron, breech-loading cannon is the only one of its kind in Wales. It is designed to be carried on a ship of war and fired through a gun port on the side of the hull.