Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleThe Iveagh Geological Laboratory, Trinity College, Dublin.AuthorsGILL, W. D.PublicationNature, 1956, Vol 177, Issue 4519, p1056ISSN0028-0836Publication typeArticleDOI10.1038/1771056a0