 | 1849 - 428 páginas
...composed of Diatomacete. These were on their flight from America to Africa. From their siO liceous nature, they resist even the strong heat of volcanoes,...vegetables. This they effect by the minute division of the siliceous particles laid up in their tissues, and probably make this nearly insoluble earth more fit... | |
 | 1849 - 424 páginas
...found composed of Diatomaeea. These were on their flight from America to Africa. From their siliceous nature, they resist even the strong heat of volcanoes,...vegetables. This they effect by the minute division of the siliceous particles laid up in their tissues, and probably make this nearly insoluble earth more fit... | |
 | Chambers W. and R., ltd - 1850 - 782 páginas
...cortstituents of the pumice and ashes which are vomited from the burning crater. ' In fact,' says Dr Harvey, 'it is difficult to .name a nook on the face of the...vegetables. This they effect by the minute division of the siliceous particles laid up in their tissues, and probably make this really insoluble earth (silex)... | |
 | 1850 - 268 páginas
...constituents of the pumice and ashes which are vomited from the burning crater. ' In fact,' says Dr Harvey, ' it is difficult to name a nook on the face of the...seems to be the preparation of a soil for a higher ckss of vegetables. This they effect by the minute division of the siliceous particles laid up in their... | |
 | William Henry Harvey - 1854 - 350 páginas
...microscope, was found composed of Diatomacece. These were on their flight from America to Africa. From their silicious nature they resist even the strong...the general economy, besides affording food for the humbler members of the animal kingdom, seem to be the preparation of a soil for a higher class of vegetables.... | |
 | 1856 - 580 páginas
...constituents of the pumice and ashes which are vomited from the burning crater. ' In fact,' says Dr Harvey, ' it is difficult to name a nook on the face of the...wholly absent, either in a dead or living state ; and then- office in the general economy, besides affording food for the humble members of the animal kingdom,... | |
 | John Marius Wilson - 1859 - 476 páginas
...from the crater. In fact, it is difficult to name a nook on the face of the earth, or in the depth of the sea, where they are wholly absent either in a dead or living state." Some rare and curious kindred of these minute wonders of the waters have had quite as much to' do as... | |
 | 1886 - 562 páginas
...fossil state even in early beds. No part of our modern seas is without this ever-springing vegetation. In fact, it is difficult to name a nook on the face...the general economy, besides affording food for the humbler members of the animal kingdom, seems to be the preparation of a soil for a higher class of... | |
 | Henry Coppée - 1896 - 546 páginas
...fossil state even in early beds. No part of our modern seas is without this ever-springing vegetation. In fact, it is difficult to name a nook on the face...the general economy, besides affording food for the humbler members of the animal kingdom, seems to be the preparation of a soil for a higher class of... | |
 | 1851 - 644 páginas
...constituents of the pumice and ashes which are vomited from the burning crater. " In fact," says Dr. Harvey, " it is difficult to name a nook on the face of the...they are wholly absent, either in a dead or living stnte ; and their office in the general economy, besides affording food for the humble members of the... | |
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From their siliceous nature, they resist even the strong heat of volcanoes, and their remains are found thrown up in the pumice and dust from the crater. In fact, it is difficult to name a nook on the face of the earth, or in the depths of the sea, where... 
