Show PIC plenty ty of nitrogen left arten it has be been estimated estl abed thit dint in france alone the amount of ni nitrogen trogon yearly taken from the soil li Is COO tons and not TO t much more than one halt half of this Is ie turned to the soil in stable manure let it be assumed lot loi the ot of argument that those counti countries ies e am ral alloi ing fertilizers li ait e dar audr ing ine each ear 5 tons of nitrogen tills this seems to ba b a fairly liberal e es s taral ite judging from the abbie figure frince and the fact that during 1 1500 1 tons of 0 nitrate of soda throughout the on oil this basis it li ig easily easil een ee in hilt hat theme clisie li Is no danger of impoverish ing g the atmosphere for the atmos at sea leel corle cone ponds to about 11 i 1 aund of nitrogen a inch oi 01 sa I 1 WO 00 pounds a squire it e toot loot or 20 tons a square mile each mile of tile the airth a sur tice face has aboe it enough nitrogen to supply the entire voiad for luc file lears on the basis assumed above and since the entire surface of ohp earth la Is not much short of square miles tile the world orld can RO go on abstracting abstract lne inz rit miltn ol ken at this rato tor for about bufore reducing the quantity in the atmosphere one tenth per cent |