II. Helium, a gaseous constituent of certain minerals. Part II—Density

@article{RamsayIIHA,
  title={II. Helium, a gaseous constituent of certain minerals. Part II—Density},
  author={W. Ramsay},
  journal={Proceedings of the Royal Society of London},
  volume={59},
  pages={325 - 330}
}
  • W. Ramsay
  • Chemistry
  • Proceedings of the Royal Society of London
1. In the original notice of this gas (‘Proc. Roy. Soc.,’ vol. 58, p. 81), it was stated that the gas obtained from cleveite contained some, but not much, nitrogen, and no hydrogen. I have since prepared samples from bröggerite, samarskite, and fergusonite, and I find that in all eases the gas evolved on heating the mineral in a vacuum is rich in hydrogen; the amount of nitrogen is in all cases infinitesimal. 
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