 | David Page - 1844 - 232 pagine
...of coal. This mineral, being chiefly composed of carbon, hydrogen, and oxygen — the same elements which enter into the composition of plants — and...then overlaid by deposits of sand and mud, are the questions at issue. According to the latter hypothesis, the vegetable matter must have grown in dense... | |
 | David Page - 1849 - 372 pagine
...of coal. This mineral, being chiefly composed of carbon, hydrogen, and oxygen — the same elements which enter into the composition of plants — and...But whether the plants of which it is composed were 542 Wny is it argued that the sun could not furnish heat enough ? 643. Whence is it supposed that the... | |
 | William Chambers - 1859 - 234 pagine
...of coal. This mineral, being chiefly composed of carbon, hydrogen, and oxygen — the same elements which enter into the composition of plants — and...submerged, and then overlaid by deposits of sand and mud, dre the questions at issue. According to the latter hypothesis, the vegetable matter must have grown... | |
 | David Page - 1870 - 348 pagine
...geological reasoning is here adopted ? 545. Of what chemical elements is coal chiefly composed f driftei! down by rivers and deposited along with layers of...then overlaid by deposits of sand and mud, are the questions at issue. According to the latter hypothesis, the vegetable matter must have grown in dense... | |
 | American Pharmaceutical Association - 1870 - 482 pagine
...one formation. This mineral being composed chiefly of carbon, hydrogen and oxygen, the same elements which enter into the composition of plants, and revealing...its mass evidence of vegetable structure, no doubt can be entertained of its organic origin, but whether or not those medicinal plants which now appear... | |
 | Woolhope Naturalists' Field Club - 1890 - 460 pagine
...somewhat different with Coal. This mineral being chiefly composed of carbon, hydrogen, and oxygen, and revealing in its mass evidence of vegetable structure,...and sand in estuaries, or whether dense forests and peat mosses were submerged, and then overlaid by deposits of sand and mud, are the two main questions... | |
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... water ; but the case is somewhat different with beds of coal. This mineral, being chiefly composed of carbon, hydrogen, and oxygen — the same elements which enter into the composition of plants — and revealing in its mass evidence of vegetable... 