Engineering of to-day; a popular account of the present state of the science, with many interesting examples described in non-technical language
Marvels of scientific invention; an interesting account in non-technical language of the invention of guns, torpedoes, submarines, mines, up-to-date . and many other recent discoveries of science
The romance of modern railways; the story of mechanical locomotion, with a description of the construction & working of the most up-to-date . speed, facility and safety in operation
The romance of war inventions; a description of warships, guns, tanks, rifles, bombs, and other instruments and munitions of warfare, how they were invented & how they are employed