00718cam a2200205 4500 377780164 TxAuBib 20170331120000.0 171210s2017||||||||||||||||||||||||eng|u 56159 Project Gutenberg PGUSA eng TxAuBib Capron, J. Rand, 1829-1888. Auroræ [Gutenberg] : Their Characters and Spectra / J. Rand Capron. Project Gutenberg, 2017. I. The aurora and its characters -- II. The spectrum of the aurora -- III. Magneto-electric experiments in connexion with the aurora. Public domain in the USA. Text. Auroras. http://www.gutenberg.org/ebooks/56159 TXTLL