A production of amino acids under possible primitive earth conditions.

@article{Miller1953APO,
  title={A production of amino acids under possible primitive earth conditions.},
  author={S. L. Miller},
  journal={Science},
  year={1953},
  volume={117 3046},
  pages={
          528-9
        }
}
atmosphere of methane, ammonia, water, and hydrogen instead of carbon dioxide, nitrogen, oxygen, and water was suggested by Oparin (1) and has been-given emphasis recently by Urey (2) and Bernal (3). In order to test this hypothesis, an apparatus was built to circulate CHI4, NH3, H2O, and H2 past an electric discharge. The resulting mixture has been tested for amino acids by paper chromatography. Electrical discharge was used to form free radicals instead of ultraviolet light, because quartz… 

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This work was done under contract N7-onr 434 Task Order III, Naval Department, Office of Naval Research, and made use of a homotopy lemma similar to Spanier's lemma.