...The whole of these lakes were let out by means of cracks or fissures made in the subtending sides by the upheaval of the country... 
David Livingstone 「Missionary Travels and Researches in South Africa」
...The enormous cleavage of the rocks, the appalling cracks and fissures, the rent boulders, the smitten granite floors, gave one a new sense of the power of heat and frost...
John Burroughs 「Birds and Bees, Sharp Eyes and, Other Papers」
...Fissate: divided or split: with fissures or cracks...
John. B. Smith 「Explanation of Terms Used in Entomology」
...We can trace a similargradual development in the fissures and convolutions that are found on thesurface of the cerebrum of the higher mammals (Figs...
Ernst Haeckel 「The Evolution of Man」
...Therefore, where the mountains are not earthy but consist of softstone, the force of the fire, passing through the fissures in the stone,sets it afire...
Vitruvius 「Ten Books on Architecture」
..."Old fissures extended themselves into the fresh masonry, and new ones made their appearance...
Hubert C. Corlette 「Bell's Cathedrals: Chichester (1901)」
...On Wednesday,crushed mortar began to pour from the old fissures, flakes of thefacing stone fell, and the braces began to bend...
Hubert C. Corlette 「Bell's Cathedrals: Chichester (1901)」
...
here the ground was fairly level, but there were many fissures and small craters which made the footing precarious...
Harl Vincent 「Vulcan's Workshop」
...The rills, on the other hand, are actually fissures, about amile or so in width and about a quarter of a mile in depth...
Cecil G. Dolmage 「Astronomy of To-day」
...We see, again, great fissures,almost perfectly straight and of great length, although very narrow,which appear like the cracks in moist clayey soil when dried by thesun...
Richard A. Proctor 「Half-hours with the Telescope」
...It seemed like five or six enormous pink hay-stacks, leaning for support against one another, with open cracks or fissures between, which came only about half-way down its face...
Ernest Giles 「Australia Twice Traversed, The Romance of Exploration」
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