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Outlines of an Attempt to Establish a Knowledge of Extraneous Fossils on ...
No preview available - 2016
according alluvial ambulacra amphibia animal or vegetable aperture appear argillaceous argillite beds belong bituminous bones calcareous carbonate cavities cell chert clay coal common conservata considered consist constitute Corallina corals deposited Derbyshire distinct distinguished drepora earth Ellis exhibit external extraneous fossils Flustra foliaceous formation frequently fulciment genera geniculum genus Hence impregnated instances Kirw lamella less ancient limestone Linn Madrepora mammalia margin marl mass matrix mineral mineral kingdom mineral matter mode Monte Bolca mountains neral nucleus observed occur operculum organic body organic form organic remains original oval particles petrifactions Petrificata petrified wood plants primary principles rarely recent receptacles relics reliquia reliquium rocks sandstone secondary Sertularia shells siliceous soils sometimes species specimens stances stem stipe stirp stirplets stone stony strata stratum structure substance surface Syst testaceous texture tion tracts valves various vegetable bodies vegetable matter vegetable remains veins Vide zoophytes
Page 41 - Playfair himself (page 459), whether they are the work of successive ages, or of some sudden catastrophe, that has assembled in one place, and overwhelmed, with immediate destruction, a vast multitude of the inhabitants of the earth.
Page xiv - ... his descriptions from single examples, however perfect they may appear to be. — In many instances, it is only by collating a number of specimens, that we are able to acquire that knowledge of a species, which is sufficient for the purpose of its discrimination " (p. xiii, foot-note) 17. " . . . . the reader, perhaps, will object that our premises must lead the student's attention wholly to the organic form of reliquia, .... I wish forcibly to impress it on the mind of the student, that, however...
Page 63 - ... passing through the bituminous change, it would fill its own mould, with its own altered substance, forming such a surface, as the surrounding stony matter would adhere to but slightly; and would therefore dispose to that separation by which its form is displayed.
Page 62 - The plant, having been surrounded by the soft or fluid materials, of which the sandstone has been since formed, its internal succulent part would...
Page 40 - The fossail subjects often retain a portion both of the gelatine and phosphoric acid in their composition, particularly in their interior parts ; the surface only having undergone a privation or loss of these principles. In other instances, however, the gelatine and phosphoric acid are wholly displaced ; while a greater proportion of the carbonic acid than that which existed in the original state, is to be found united with the calcareous matter.
Page 26 - ... equinoxes, we seem compelled to admit that a change in the relative level of the sea and land has taken place since these trees lived on the situations where we now find them.
Page 15 - Lhwyd, who supposed extraneous fossils to be generated by seeds and spawn taken up in vapour, and, after being precipitated in rain, deposited by the percolating...