Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 631
tiania-fjord), is ofpeculiar interest from the fact that it has been discovered in afossil state by Mr. H. B. Brady, in a clay seam between two layersof Carboniferous Limestone. Its size is that of very minute seeds.—In striking contrast to the preceding is another single-chamberedtype,… … Arenaceous Foraminifera:—a, Saccamina spherica; I, thesame laid open; c, portion of the test enlarged to show itscomponent sand-grains :—d, Filuliva Jeffreysii; e, portion ofthe test enlarged, showing the arrangement of the sponge-spicules. sphere ; and its orifice, instead of being circular and…
Microscopy · Biology
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