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In the second place, different formations in the field, realising the need for specialist treatment of the gas question, after the first German attack, created staff appointments for certain chemists chosen from infantry regiments and other formations on the front. Thirdly, men were collected at a depot in France to form the nucleus of the offensive gas troops.
If now all these offshore formations were raised to open air, how could they be correlated? Surely not by lithological likeness, for in this respect they would be quite diverse. All would be similar, however, in the fossils which they contain. Some fossil species would be identical in all these formations and others would be closely allied.
Between Coquimbo and Guasco there are two considerable formations of mica- slate, in one of which the rock passed sometimes into common clay-slate and sometimes into a glossy black variety, very like that in the Chonos Archipelago.
The frost on the window pane takes its pattern, the crystals in the glass and stone have their formations, the grain of sand, the plant all forms of animal life the solar system and, doubtless, an infinite number of other systems which the eye cannot see or the mind comprehend take on form and order.
The several difficulties here discussed, namely our not finding in the successive formations infinitely numerous transitional links between the many species which now exist or have existed; the sudden manner in which whole groups of species appear in our European formations; the almost entire absence, as at present known, of fossiliferous formations beneath the Silurian strata, are all undoubtedly of the gravest nature.
It is the theory of geologists that ten thousand feet of strata have been swept by erosion from the surface of this entire platform, whose present uppermost formation is the Carboniferous; the deduction being based upon the fact that the missing Permian, Mesozoic, and Tertiary formations, which belong above this Carboniferous in the series, are found in their place at the beginning of the northern terraces referred to.
And his chronological scheme of formations was founded on the mode of occurrence of the rocks within these narrow confines."
Formerly, when the Norwich or Fluvio-marine Crag was spoken of, both these formations were included under the same head, for both at Bramerton and Thorpe, the chief localities where the Norwich Crag was studied, an overlying deposit occurs referable to the Chillesford age. If now the two were fused together as of old, their shells would, according to Mr.
In those days, as one went to Pennsylvania to study coal formations, or to Lake Superior for copper, so one went to Kansas for men. "Every footpath on this planet," said a rare thinker, "may lead to the door of a hero," and that trail into Kansas ended rightly at the tent-door of John Brown.
The Crinoidea, in the abundance of stalked forms in the ancient formations as compared with their present rarity, seem to present us with a fair case of modification from a more embryonic towards a less embryonic condition.
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