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Published online by Cambridge University Press: 01 May 2009
Observations on Spirorbis.—In the foregoing history I have endeavoured to give a brief and clear outline of the views held by those who have made it the subject of their investigations since the time of W. Martin.
page 216 note 1 Bull. l'Acad. Bruxelles, R., 1867, xxiii. p. 389.Google Scholar
page 216 note 2 Ibid. p. 390.
page 217 note 1 Mem. Lit Phil. Soc. Manchester, x. p. 196.Google Scholar
page 217 note 2 Trans. Geol. Soc. Glasgow, iii. App. p. 23.Google Scholar
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page 217 note 5 Ibid. p. 64.
page 218 note 1 Student's Elements Geol. 1874, pp. 395–96.
page 218 note 2 Iron Ores Gt. Brit. pt. 3, p. 227.
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