Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 231
to increase of rangewhen elongated pointed projectiles were used with them. Now let us see of what kind was the ordnance used for some yearsafter the middle of the century, in order that we may be the better ableto appreciate the progress that has since been made. Ordnance is, asalready noticed, of… … Fig 90.—2i^-pounder, 1807. three different ways. We may name it by the weight of the gun itselfin tons or hundredweights, as a 35-ton gun, etc. ; or by the weightof its projectile, as a 68-pounder, etc. ; or by its calibre, that is thediameter of its bore, as a 4-inch gun, etc. We may take the…
Inventions
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