Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 304
antity of gas, and con-sequently the pressure, is constantly increasing;thus the speed of the shot becomes greater andgreater as it goes out of the gun. Sometimesgrains of powder still burning are thrown outwhen the gun is fired, which shows how slowlyit ignites. This new powder is brown, and is… … VIEW OF THE GOVERNMENT PROVING GROUND, INDIAN HEAD. metal must be so hard that the projectile can be fired through steelarmor of a thickness equal to one eighth morethan its diameter, without its being broken ormaterially injured; for instance, an eight-inchprojectile, according to this rule, must…
Children's literature
Internet Archive · UNC Libraries · Public Domain Mark 1.0. Free to use for anything.
![An illustration from St. Nicholas [serial], 1873, leaf 304](https://img.insideoutlibrary.com/img/1024/ia-stnicholasserial252dodg-304-206.webp)
