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6 9 
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4 Del Bays, J. E.— [See under C. Lyell, 1838]. 
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6 Note on Pentacrinus gracilis [etc. ; with plate 17, 
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7 Lyell, C— [See 1830 and 1838]. 
8 McFarlane, A.— Guide to Malham. [See 1908]. 
9 Phillips, J. — Observations on the Process of Petrifaction. 
Proc. Yorks. Geol. Soc, vol. ii., pp. 305-308. 
