...Amongthe treasures she had gathered in the bed of the stream were severalpieces of volcanic glass, clear as crystal... 
Edgar Rice Burroughs 「Tarzan the Terrible」
...Nassau says it is always said tobe north of Gaboon; but so far no white man has any knowledge of anactive volcano there, although the district is of volcanic origin...
Mary H. Kingsley 「Travels in West Africa」
...Buea seems a sporting place for weather even without volcanic eruptions,during the whole tornado season (there are two a year), over-chargedtornadoes burst in the barrack yard...
Mary H. Kingsley 「Travels in West Africa」
...The sandy plain was covered with such vestiges of volcanic action, and the infernal bombs lay as imperishable relics of a hailstorm such as may have destroyed Sodom and Gomorrah...
Samuel White Baker 「In the Heart of Africa」
...Overweg believes it to bebasalt, or a species of volcanic stone of similarcharacter...
James Richardson 「Narrative of a Mission to Central Africa Performed in the Years 1850-51, Volume 2」
...Descending the side of a deep, desolate rift in theearth, we found ourselves among unmistakable tracesof violent volcanic action...
W. E. Webb 「Buffalo Land」
...Zonal range: Arid Tropical in a partof the Orizaba-Zempoaltepec Faunal District of the Transverse Volcanic BioticProvince of Moore (1945:218)...
Robert L. Packard 「Speciation and Evolution of the Pygmy Mice, Genus Baiomys」
...The advance of ice down the mountain sides inthe transverse volcanic zone was accompanied by cool moist climatesor pluvial periods...
Robert L. Packard 「Speciation and Evolution of the Pygmy Mice, Genus Baiomys」
...The soil in this cañon was not deep and consistedof a rocky, marly mixture, pale red in color, evidently produced byweathering of the reddish volcanic rocks bordering the cañon...
Rollin H. Baker 「Two New Moles (Genus Scalopus) from Mexico and Texas」
...Paul—Amphitheatreof Nero—Solfatara—Relics of Volcanic Fires and Ancient Civilisationmixed together—Volcanic Fires and Landscape Beauty—Completion of Gospelin St...
Hugh Macmillan 「Roman Mosaics」
...It consists of a series ofvaults excavated out of the solid tufa rock, where it slopes down fromthe Capitoline Hill into the Forum, each lined with massive blocks ofred volcanic stone...
Hugh Macmillan 「Roman Mosaics」
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