Page:A short history of astronomy(1898).djvu/464

This page has been validated.

Fig. 96.—A group of sun-spots. From a photograph taken by M. Janssen at Meudon on April 1st, 1894.

[To face p. 385.

Retrieved from "https://en.wikisource.org/w/index.php?title=Page:A_short_history_of_astronomy(1898).djvu/464&oldid=13155384"