Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 917
imens of Chalk vary greatly in* The Depths of the Sea, p. 410. 826 APPLICATION TO GEOLOGICAL INVESTIGATION. the proportion which the distinctly organic remains bear to theamorphous residuum, and which the different kinds of the formerbear to each other; and this is quite what might be… … Microscopic Organisms in Chalk from Gravesend:—a, b, c, d,Textularia globulosa; e, e, e, Kotalia aspera; /, Textulariaaculeata; g, Planularia liexas; h, Navicula. component of the Globigerina-mud, that the amorphous constituentof Chalk likewise is the disintegrated residuum of…
Microscopy · Biology
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