Abstract
LORD RAYLEIGH finds that igneous rocks in general contain about 3 X 10-2 c.c. of nitrogen per gram, mostly held in chemical combination. The ratio argon/nitrogen is much less in the earth's crust than in the atmosphere. The total nitrogen content of the rocks is many times greater than that of the atmosphere.
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Points from Foregoing Letters. Nature 141, 978 (1938). https://doi.org/10.1038/141978b0
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DOI: https://doi.org/10.1038/141978b0