Note 372 — Chapter XI
Reading edition
See American Journal of Science, vol. xlvii. p. 402, "Unionidæ."
[373] "A solid stratum of ironstone, which extends from Tupton Moor to Staveley." Martin's Petrificata Derbiensia, pl. xxvii.
Reading edition
See American Journal of Science, vol. xlvii. p. 402, "Unionidæ."
[373] "A solid stratum of ironstone, which extends from Tupton Moor to Staveley." Martin's Petrificata Derbiensia, pl. xxvii.