^{page 173 note 1} L. J. Igelström, On the occurrence of thick beds of bituminous gneiss and mica schist in the Nullaberg, parish of Ostmark, province of Wermland, in Sweden—A. E. Nordenskiöld, Note on the mineral character of the rock.—F. L. Ekman, Chemical analysis of the rock.—Translated from communications read to the Royal. Swedish Academy of Sciences at Stockholm.

^{page 174 note 1} It may be noted that Dr. T. Sterry Hunt has urged the presence of carbon in the state of graphite, unoxidised, in metamorphic rocks, as a proof that a temperature of ignition was not required for metamorphism.—Vide Geol. Mag. Vol. I. p. 202.Google Scholar

^{page 174 note 2} Geol. Mag. Vol. I. p. 156.Google Scholar

^{page 174 note 3} Ibid. Vol. II. p. 239.