. The Saturday evening post. ure ofkitchen utensils. As for helium, the late war brought thisgas to the forefront because of the possibility of its use forinflating dirigibles and observation balloons. Helium isextremely buoyant and so inert that no enemy bullet canexplode it. Before the war it cost $1700 to get a cubic footof helium out of the air. However, the urgency of its needfocused scientific attention upon methods for producingthe gas, so that at the present time processes have beendeveloped to a point of efficiency that enables us to extractthe gas from the air at a cost of about ten
. The Saturday evening post. ure ofkitchen utensils. As for helium, the late war brought thisgas to the forefront because of the possibility of its use forinflating dirigibles and observation balloons. Helium isextremely buoyant and so inert that no enemy bullet canexplode it. Before the war it cost $1700 to get a cubic footof helium out of the air. However, the urgency of its needfocused scientific attention upon methods for producingthe gas, so that at the present time processes have beendeveloped to a point of efficiency that enables us to extractthe gas from the air at a cost of about ten cents a cubicfoot. But even at this comparatively low productioncharge it would cost something like $300,000 to fill one bigdirigible with helium gas. A use has been found for neon, whose only claim to com-mercial distinction is that when a current of electricity is-passed through a tube of it a strange and beautiful orange-pink glow is given off. Certain European lamp makers i Continued on Page 34) THE SATURDAY EVENING POST.
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