Quart. Journ. Geol. Soc. Vol. LXVII, Pl. XXV. 



rJ6b 



1 8a_ 1 8b 



19a 19b 20a 20b 21 



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X2 X2 



20c X2 



ZT. .9. C. del. Bemrose Ltd., Collo. Derby. 



CAMBRIAN TRILOBITES, from COMLEY. 



