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Show ' Learning Abaut Nltragen. ' Hecent experiment with the alpha "'- ' ray have led to the discovery,, say ..the - .., English Mechanic nnd World of Science, Sci-ence, that nitrogen, which for a century cen-tury and a halt has been regarded as np element, may not he an element j -nt nil, hut a compound of hydrogen and helium. It Is an Interesting colncl- ' dence thnt Doctor Daltnn. according to the now accepted account, wns led to hfs, theory of the atomic structure of matter by n -study of the physical . properties of tho ntmoaphere. Sir , , Ernest Rutherford, hy experiments on the same gases, now sees In ench of Dnltoii's atoms of nitrogen nn ntoinlc system in which two distinct element piny a part, and nitrogen Itseif np-parently np-parently Is .to disappear its nil element. Youth's Companion. |