 | 1861 - 504 pagina’s
...confined to particular strata which were originally shales containing vegetable remains ; these have undergone " a special mineralization producing a bituminous...temperature, and under the normal conditions of climate." He also describes wood partially converted into bitumen, which last when removed by solution leaves... | |
 | 1861 - 534 pagina’s
...confined to particular strata which were originally shales containing vegetable remains ; these have undergone " a special mineralization producing a bituminous...temperature, and under the normal conditions of climate." He also describes wood partially converted into bitumen, which last when removed by solution leaves... | |
 | 1862 - 606 pagina’s
...confined to particular strata which were originally shales, containing vegetable remains. These have undergone " a special mineralization, producing a...temperature, and under the normal conditions of climate." He also describes wood partially converted into bitumen, which last, when removed by solution, leaves... | |
 | 1862 - 446 pagina’s
...confined to particular strata which were originally shales containing veg• etable remains ; these have undergone " a special mineralization producing a bituminous...temperature, and under the normal conditions of climate." He also describes wood partially converted into bitumen, which last, when removed by solution, leaves... | |
 | 1862 - 476 pagina’s
...mineralization producing a bituminous matter instead of coal or lignite. This operation is not attribntable to heat, nor of the nature of a distillation, but...temperature, and under the normal conditions of climate." He also describes wood partially converted into bitumen, which last, when removed by solution, leaves... | |
 | Henry Woodward - 1866 - 652 pagina’s
...defective ; for though that writer implies that the beds of vegetable matter undergoing conversion by chemical reactions, at the ordinary temperature, and under the normal conditions of climate, become a solid bitumen identical with the fluid of the " pitch-lake," yet, we fail, on referring to... | |
 | 1865 - 458 pagina’s
...confined to particular strata which were originally shales containing vugetable remains ; these have undergone " a special mineralization producing a bituminous...temperature, and under the normal conditions of climate." He also describes wood partially converted into bitumen, which last, when removed by solution, leaves... | |
 | 1866 - 470 pagina’s
...subsequently made, that wild animals were sometimes mired and died in the tarry oil springs in that State. Of the origin of petroleum there are different opinions....materials directly into oil and kindred hydrocarbons. The facts cited in proof are, that oil is found in the cavities of fossils (Orthocerata, &c.), and... | |
 | 1866 - 768 pagina’s
...defective; for though that writer implies that the beds of vegetable matter undergoing conversion by chemical reactions, at the ordinary temperature, and under the normal conditions of climate, become a solid bitumen identical with the fluid of the "pitch-lake," yet we fail, on referring to the... | |
 | Henry Woodward - 1866 - 654 pagina’s
...defective ; for though that writer implies that the beds of vegetable matter undergoing conversion by chemical reactions, at the ordinary temperature, and under the normal conditions of climate, become a solid bitumen identical with the fluid of the " pitch-lake," yet, we fail, on referring to... | |
| |
a special mineralization producing a bituminous matter instead of coal or lignite. This operation is not attributable to heat, nor of the nature of a distillation, but is due to chemical reactions at the ordinary temperature, and under the normal conditions... 
