The Bermuda Islands are of coral formation and have no deposits of diatomaceous earth.
Beds of diatomaceous earth reported to be 40 feet thick and of wide extent have been found near Richmond, Virginia, and similar deposits occur at several localities in Oregon, California, etc.
The latter occur in such enormous numbers that their tiny decomposed skeletons after dropping to the bottom of the sea form the diatomaceous earth, so much used in polishing machinery.
Of those kinds that are never anchored the number is legion, and in addition to those forming the diatomaceous earth, already mentioned, there are many more.
Not only are these minute plants assisting at the present time in the accumulation of oceanic and lake deposits, but in former ages they have been sufficiently active to give rise to considerable deposits of diatomaceous earths.
Most of these diatomaceous earths are associated with rocks of Tertiary formations, although it is generally regarded that the earliest appearance of diatoms is in the Upper Cretaceous (chalk).
Vast deposits of Diatomaceous earths have been discovered in various parts of the world,--some the deposit of fresh, others of salt water.
A quite peculiar structure, a diatomaceoustracery of extremely fine and regular hexagonal frames, distinguishes the Challengerida (Pl.
But the two latter families never possess that peculiar extremely regular and delicate diatomaceous structure which is exhibited only by the Challengerida.
To recognise the true nature of this diatomaceous structure, sections and slides of the shell are required, and also fragments of broken shells, the broken margins of which are of special value for obtaining further explanation.
Structure of the shell of { simple lattice-work, neither { diatomaceousnor alveolar.
This elegant diatomaceous structure is extremely similar or nearly identical with that well-known regular structure which we find in the common Diatomaceae or Bacillariae.
The structure of this proboscis or peristome is usually the same as in the diatomaceous shell-wall; but sometimes its lattice-work assumes a different shape.
Diatomaceous (infusorial) earth is used as a polishing agent and also as a filtering medium, an absorbent, and for heat insulation.
Diatomaceous earth is made up of remains of minute aquatic plants.
It is the chief ingredient of sand, sandstone, quartzite, chert, diatomaceous earth, and tripoli.
The proximity of thisDiatomaceous bed to Mount Erebus would easily explain how these minute shells might be found abundant in the fine dust ejected from that volcano.
Then it is my duty to inform you that the man or woman who drinks water from that spring is swallowing millions of tiny flint knives, hard as diamond dust--indeed, diatomaceous earth is used commercially as a polishing powder.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "diatomaceous" in a variety of sentences. We hope that you will now be able to make sentences using this word.
