Reports On The Observations Of The Total Eclipse Of The Sun Of January 1, 1889.Printed by Authority of the Regents of the University of California .

8vo. pp. x, [1 leaf], 210. 3 plates (incl. frontis.: mounted silver-print of the Corona from a copy of the original negative made by E.E.Barnard). 4 text illus. original cloth. "The eclipse of January I, 1889, was observed in California and Nevada by many American astronomers. The photographs of the corona, especially those by Charoppin and E. E. Barnard, show a wealth of detail. Those of Barnard, of the Lick Observatory party, were studied by Holden, and exhibited the fact that rays, like the "polar-rays", extended all round the sun, instead of, being confined to the polar regions only. The outer corona was registered out to 100' from the moon's limb on Charoppins negatives, to 130' on those of Lowden and Ireland. On other plates the outline of the moon is visible projected on the corona before totality began. The spectrum of the corona showed fern bright lines besides those of coronium and hydrogen." (Encyc. Britannica, 11th Edn.).