Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 823
les, so as to be veryclose to each other in certain spots at the surface of the film, whilstwidely separated in others. Now these fibres, which are less thanTo~ijiroth °^ an incn in diameter, are the £ internal casts • of the tubuliof the Nummuline layer (a precise parallel to them being presented… … Fig. 585.—Vertical section of a portion of one of the calcareous lamellae ofEozodn canadensc: a a, Nummuline layer perforated by parallel tubuli,which show a flexure along the line a a; beneath this is seen the inter-mediate skeleton, c, C, traversed by the large canals, and by obliquecleavage…
Microscopy
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