"Silurian" Quotes from Famous Books
 ... the lower vertebrata (Elasmobranch and Ganoid fishes) occur, indeed, in early strata (upper Silurian); but still far from the earliest in which some of the invertebrata are found. The general statement in the text applies chiefly to the more highly organised ...
— The Scientific Evidences of Organic Evolution • George John Romanes
... "middle life" or those between the most ancient and the Cenozoic, or recent forms of life. The periods are lesser divisions of the eras. In the Proterozoic, there are two periods, viz.: the Archaean and the Algonkian. The Paleozoic has six periods, viz.: the Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian. The Mesozoic era has three periods, the Triassic, Jurassic and Cretaceous, while the Cenozoic era names five periods,—the Eocene, Oligocene, Miocene, Pliocene ...
— The Grand Canyon of Arizona: How to See It, • George Wharton James
... to the uranium haloes of the mica of County Carlow.[1] Results for the age of the halo of from 20 to 400 millions of years have been obtained. This mica was probably formed in the granite of Leinster in late Silurian or in ...
— The Birth-Time of the World and Other Scientific Essays • J. (John) Joly
... lithological evidence; yet his reasoning all through Siluria, shows that he still thinks it natural to expect formations of the same age to be chemically similar, even in remote regions. For example, in treating of the Silurian rocks of South Scotland, he says:—"When traversing the tract between Dumfries and Moffat, in 1850, it occurred to me, that the dull reddish or purple sandstone and schist to the north of the former town, which so resembled the bottom rocks of Longmynd, ...
— Essays: Scientific, Political, & Speculative, Vol. I • Herbert Spencer
... felspathic porphyry and ashes. The same formation occurs just within the county border at Cerrig-y-Druidion, Langum, Bettys-y-coed and in the Fairy Glen. Northwards from the Ceiriog to the limestone fringe at Llandrillo the Wenlock shale of the Silurian covers the entire mass of the Hiraethog and Clwydian hills, but verging on its western slopes into the Denbighshire grit, which may be traced southward in a continuous line from the mouth of the Conway as far as Llanddewi Ystrad ...
— Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 2 - "Demijohn" to "Destructor" • Various
... India, 1st ed., Part I, p. iv). The Satpura range, thus defined, separates the valley of the Nerbudda from the valleys of the Tapti flowing west, and the Mahanadi flowing east. The Vindhyan sandstones certainly are a formation of immense antiquity, perhaps pre-Silurian. They are azoic, or devoid of fossils; and it is consequently impossible to determine exactly their geological age, or 'horizon' (ibid. p. xxiii). The cappings of basalt, in some cases with laterite superimposed, suggest ...
— Rambles and Recollections of an Indian Official • William Sleeman
... a glimpse of him half an hour ago; but before I could escape from a geologist who was boring me about the Silurian system, Kenelm had vanished." ...
— Kenelm Chillingly, Complete • Edward Bulwer-Lytton
... the Midlands, because they now consist almost entirely of the descendants of the free Britons who were driven westward rather than submit to the overwhelming invasion of the Teutonic tribes. Thus it is that probably, except for a certain Silurian (or Iberian) element in South Wales, which descends from the higher or fighting sort of pre-Aryan, and a surviving aboriginal element in parts of Ireland, the natives of what are known as the “Celtic” parts of these islands are more purely Aryan than any except the ...
— A Handbook of the Cornish Language - chiefly in its latest stages with some account of its history and literature • Henry Jenner
... thence through boreal and arctic latitudes into North America. Of the height and mass of this primeval land some idea may be formed by considering the enormous bulk of the material derived from its disintegration. In the Silurian formations of the British Islands alone there is a mass of rock, worn from the land, which would form a mountain-chain extending from Marseilles to the North Cape (1800 miles), with a mean breadth of over thirty-three miles, and an average ...
— The Antediluvian World • Ignatius Donnelly
... as it was at first, there was not a living plant or animal; after thousands of years, or millions of years, there came into the broad seas of the lower Silurian epoch, some of the lowest kinds of animals and seaweeds, a few trilobites and mollusks, but no plants save fucoids. Next came, after a long time, a few cartilaginous fishes and corals. A long time passed—thousands ...
— Orthodoxy: Its Truths And Errors • James Freeman Clarke
... one other geological term, bequeathed to us by a great authority, and which cannot be changed for the better: I mean that of Geological Horizon, applied by Humboldt to the whole extent of any one geological division,—as, for instance, the Silurian horizon, including the whole extent of the Silurian epoch. It indicates one level in time, as the horizon which limits our view indicates the farthest extension of the plain on which we stand ...
— Atlantic Monthly, Vol. XII. July, 1863, No. LXIX. - A Magazine Of Literature, Art, And Politics • Various
... the European and of the North American Silurians based? In the last edition of Sir Charles Lyell's "Elementary Geology" it is stated, on the authority of a former President of this Society, the late Daniel Sharpe, that between 30 and 40 per cent. of the species of Silurian Mollusca are common to both sides of the Atlantic. By way of due allowance for further discovery, let us double the lesser number and suppose that 60 per cent. of the species are common to the North American and the British Silurians. Sixty per cent. of species in common ...
— Lay Sermons, Addresses and Reviews • Thomas Henry Huxley
... offer many opportunities for the development of stone quarries, but such stone as is extensively used was displayed. The limestones of the Silurian series are the principal sources of supply, the quarries about Joliet being among the largest in the United States. The limestone is generally used in the form of rubble ...
— Final Report of the Louisiana Purchase Exposition Commission • Louisiana Purchase Exposition Commission
... single wing found little more than a year ago is the sole evidence of insects older than the Devonian; and scorpions (highly-organized crustaceans) have been found in the Upper Silurian in ...
— Creation and Its Records • B.H. Baden-Powell
... associations of ideas and the forming of new relations - a simple matter were it not for our mental inertia. Lester Ward speculates that life remained aquatic for the vast periods that paleontology would indicate; Cambrian, Silurian, Devonian, Carboniferous - a duration greater than all subsequent time - for the reason that the creature had not progressed beyond the stage when it could move otherwise than in a straight line when actuated by desire for food or mate. Life was not able to maintain ...
— The Fourth Dimensional Reaches of the Panama-Pacific International Exposition • Cora Lenore Williams
... been throughout regular and uniform, and if none of the lower strata had been tilted up, so that even those who run might read, no shaft from the surface could have been sunk deep enough to bring the geologist from the tertiary strata down to the Silurian rocks. The same in language. Unless some languages had been arrested in their growth during their earlier stages, and had remained on the surface in this primitive state exposed only to the decomposing influence of atmospheric ...
— Chips from a German Workshop - Volume IV - Essays chiefly on the Science of Language • Max Muller
... and there is a probability that lead ore may be discovered. This will be valuable to make bullets in case of a war with Oshkosh. In peace it is always best to prepare for war, and I trust you will lend your countenance to the able men who are investigating the Lower Silurian age. ...
— Peck's Compendium of Fun • George W. Peck
... the Slob Works a low range of corrugated iron shedding shines out suddenly through a break in the vapour, and, as the sun again pierces through, a long, low, dark line is seen stretching from the shore into the water like the extremity of some huge saurian of the Silurian period reposing on his native slime and ooze. But the lengthy monster lying in a vast curve is not at peace, for on the jagged ridge of his mighty back a puffing, snorting, smoking plague perpetually runs up and down. The apparent plague, however, is really increasing the size of the ...
— Disturbed Ireland - Being the Letters Written During the Winter of 1880-81. • Bernard H. Becker
... the maddest geologist under such circumstances would have studied the nature of the rocks that we were passing. I am sure I did trouble my head about them. Pliocene, miocene, eocene, cretaceous, jurassic, triassic, permian, carboniferous, devonian, silurian, or primitive was all one to me. But the Professor, no doubt, was pursuing his observations or taking notes, for in one of our halts he said ...
— A Journey to the Interior of the Earth • Jules Verne
... time and space to describe some of the beautiful bacteria and gigantic worms that formerly inhabited the earth. Such an aggregation of actual, living Silurian monsters, any one of which would make a man a fortune to-day, if it could be kept on ice and exhibited for one season only. You could take a full grown mastodon to-day, and with no calliope, no lithographs, no bearded lady, no ...
— Remarks • Bill Nye |
