This news was to me like the coming upon a spring of water in a dry and thirsty land. Here at last presented itself the very order of work for which in an indefinite way I was looking - namely, to extend his novel methods of research upon the sun to the other heavenly bodies.

In: W.W. Campbell, Annual Report of the Board of Regents of the Smithsonian Institution, Sir William Huggins (p. 308)