 | James Dwight Dana - 1844 - 652 Seiten
...mile, Is covered with the hardened pitch, on which trees and vegetation flourish, and here and there about Point La Braye the masses of pitch look like black rocks among the foliage. Petroleum is met with in many parts of the United States. Kenhawa in Virginia, Scotsville, Ky., Duck... | |
 | James Dwight Dana - 1854 - 864 Seiten
...naphtha wells, which afford annually 412,000 buds. A remarkable lake of bitumen occurs on Trinidad, which is one and a half miles in circumference. The bitumen...look like black rocks among the foliage. The lake IB underlaid by a bed of mineral coal, (Manross). In the peninsula of Apcheron, on the western shore... | |
 | James Dwight Dana - 1854 - 946 Seiten
...surface boiled in large bubbles. The ascent to the hike from the eea, a distnnce of three quarters of n mile, is covered with a hardened pitch, on which trees...look like black rocks among the foliage. The lake is underlaid by a bed of mineral coal, (Manross). In the peninsula of Apcheron, on the western shore of... | |
 | J.D. Dana - 1855 - 440 Seiten
...mile, is covered with the hardened pitch, on which trees and vegetation flourish, and here and there about Point La Braye, the masses of pitch look like black rocks among the foliage. Large deposits of asphaltum occur in sandstone in Albania. It is also found in Derbyshire, and with... | |
 | Andrew Ure - 1860 - 972 Seiten
...surface boiled, in large bubbles. The ascent to the lake from the sea, a distance of threequarters of a -mile, is covered with a hardened pitch, on which...look like black rocks among the foliage: the lake is underlaid by a bed of mineral coal. — Manross, quoted by Dana. The Earl of Dundonald remarks, that... | |
 | Henry William Bristow - 1861 - 510 Seiten
...surface boiled, in large bubbles. The ascent to the lake from the sea, a distance of threequarters of a mile, is covered with a hardened pitch, on which...look like black rocks among the foliage. The lake is underlaid by a bed of mineral coal." (Mitnross, quoted by Dana). The Pitch Lake of Trinidad, according... | |
 | Henry William Bristow - 1861 - 478 Seiten
...surface boiled, in large bubbles. The ascent to the lake from the sea, a distance of threequarters of a mile, is covered with a hardened pitch, on which...trees and vegetables flourish; and about Point La Brave, the masses of pitch look like black rocks among the foliage. The lake is underlaid by a bed... | |
 | Geological and Agricultural Survey of Texas, Samuel Botsford Buckley - 1866 - 94 Seiten
...bubbles. The ascent to the lake from the s,a, a distance of three-fourths of a mile, is covered with hardened pitch, on which -trees and vegetables flourish, and about Point La Bra,ye th« masses of pitch look., like black recks asncng .the foliage. The lake is underlaid by a bed of... | |
 | Geological and Agricultural Survey of Texas, Samuel Botsford Buckley - 1866 - 100 Seiten
...bubbles. The ascent to the lake from the sea, a distance of three-fourths of a mile, is covered with hardened pitch, on which trees and vegetables flourish, and about Point La Brave the masses of pitch look like black rocks among the foliage. The lake is underlaid by a bed of... | |
 | Andrew Ure - 1867 - 1006 Seiten
...surface boiled, in large bubbles. The ascent to the lake from the sea, a distance of threequarters of a mile, is covered with a hardened pitch, on which...look like black rocks among the foliage: the lake is underlaid by a bed of mineral coal. — Manross, quoted by Dana. The Earl of Dnndonald remarks, that... | |
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The bitumen is solid and cold near the shores, but gradually increases in temperature and softness towards the centre, where it is boiling. The solidified bitumen appears as if it had cooled as the surface boiled in large bubbles. The ascent to the lake... 
