| Show Nitrogen From Atmosphere There has been erected at the United United Unit Unit- ed d States department of of agricultures agriculture's experiment farm at Arlington Va the largest e experimental plant in fn the United United Unit Unit- United ed States for tor the production of nitrogen nitrogen nitro nitro- gen en from al air The nitrogen so produced produced pro pro- is combined with hydrogen to form ammonia which can be used in ID inthe inthe the manufacture of explosives and fer fer- Experiments with the view I of increasing the efficiency of the process process proc proc- ess are fire now being conducted h by the bureau of soils The Haber process of ot manufacturing nitrogen Is being em em- This process Involves the production production production pro pro- of ot ammonia from om hydrogen and nitrogen The two gases are mixed mixed mixed mix mix- ed In the proper proportion put under high hh pressure and subjected to Intense heat They are tue pas passed ell over a spongy Iron D a a portion of the mixture combs to form torm ammonia am am- amI I monia a. a w I |
