...Ifthe air of the great, spheroid subterranean nation were allowed tofreely obey the laws of gravity, it would be oppressively dense in thelower levels, and excessively rarified in the upper ones... 
Various 「Astounding Stories, August, 1931」
... The operators next showed him the servants of these pieces, great oval cylinders extracted from subterranean storehouses called shelters...
Vicente Blasco Ibanez Charlotte Brewster Jordan 「The Four Horsemen of the Apocalypse」
... A short distance from the tower a subterranean passageway opened before their eyes...
Vicente Blasco Ibanez Charlotte Brewster Jordan 「The Four Horsemen of the Apocalypse」
... Through subterranean chambers,connected by winding passageways, Bukawai staggered with his load...
Edgar Rice Burroughs 「Jungle Tales of Tarzan」
...He was aware as he proceeded that thetrend of the passage was downward, though not steeply, but it seemedinterminable and he wondered to what distant subterranean lair it mightlead...
Edgar Rice Burroughs 「Tarzan the Terrible」
...The high priestguessed that deprived of the leadership of Tarzan they were littlebetter than lost in the unknown mazes of the subterranean precincts ofthe temple...
Edgar Rice Burroughs 「Tarzan the Terrible」
...Yet there was no dew, and, the house being placed on a rock, they could have no subterranean passage to the bed of the river, which ran about three hundred yards below the hill...
David Livingstone 「Missionary Travels and Researches in South Africa」
... subterranean...
Various 「Mother Earth, Vol. 1 No. 4, June 1906」
...These thegopher employs, in his subterranean researches, forthe same purpose that his enemy, man, does a wheelbarrow...
W. E. Webb 「Buffalo Land」
...I will now give a few instances of variation in subterranean buds, that is, by suckers, tubers, and bulbs; not that there is any essential difference between buds above and beneath the ground...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...What use are the claws of this tiny flea against rock,sandstone, or hardened clay? The creature must perish if it cannot finda subterranean refuge in good time...
J. H. Fabre Bernard Miall 「Social Life in the Insect World」
...Its subterranean excursions cannot cover awide range, but they enable it to visit a few adjacent cells...
Jean Henri Fabre Alexander Teixeira de Mattos 「The Glow-Worm and Other Beetles」
...In September I see her go down into the soil, which has been loosened by a recent light shower; the movement of the earth turned over keeps me informed of her subterranean progress...
J. Henri Fabre 「More Hunting Wasps」
...A subterranean excursion would not attract the Wasp if it had no object...
J. Henri Fabre 「More Hunting Wasps」
...The species of Crematogaster, which is the chief food of Gastrophrynein this region, is largely subterranean in habits, and is extremelyabundant...
Henry S. Fitch 「Field Study of Kansas Ant-Eating Frog」
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