Note 119 — Chapter VI · THE PHOTOSPHERE AND ITS DUSKY VEIL.
Reading edition
Proceedings Amer. Acad. of Sciences, 1880; Amer. Journ. of Science, vol. xxi. p. 41, 1881.
Reading edition
Proceedings Amer. Acad. of Sciences, 1880; Amer. Journ. of Science, vol. xxi. p. 41, 1881.