as sician prescribed inhala- | motive power for engines. tions of oxygen, the phar- The natural-gas engine macist transferred the came into favor about ten compressed gas from the years ago, when its use cylinder to rubber bags of was first employed in 1,800 cubic inches ca- pumping wells. After-… … particularly to the aero- to its illuminating prop- naut, to whom it is of im- erties. portance to know during Only one article is man- his ascensions how many ufactured from natural hours the supply of oxygen taken along will hold out. “Preussen,” 5,081 tons, built in 1902 for the Laeisz gas. That…
Internet Archive · Public domain (published before 1931). Free to use for anything.
