XI—Measurements of Angles of Basaltic Columns in the Giants' Causeway, County of Antrim; Made in 1877

Rev. J. H. Jellett

Fellow of Trinity College, Dublin.*

^*Communicated by Rev. Samuel Haughton, M.D.

Mineralogical Magazine; April 1879 v. 3; no. 13; p. 101-104; DOI: 10.1180/minmag.1879.003.13.13
© 1879, The Mineralogical Society
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