Note 114 — Chapter VI · THE PHOTOSPHERE AND ITS DUSKY VEIL.
Reading edition
Hence Savélieff’s experiments, according to which the solar energy progressively augmented with the increase in the number of spots in the years 1890, 1891, and 1892, are suggestive rather than conclusive (Comptes Rendus, t. cxviii. p. 62, and Astroph. Journ. vol. xiii. p. 346).