...The perforation is made by degrees, a ring with an opening in it being attached to the lip, and the ends squeezed gradually together...
David Livingstone 「Missionary Travels and Researches in South Africa」
...In the Moorpark, and generally in the Hemskirke, the stone presents a singular character in being perforated, with a bundle of fibres passing through the perforation from end to end...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...Stonein the bladder is fortunately rare in the cow, but when present it should beremoved to obviate crushing and perhaps perforation of the organ duringcalving...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...I have seen, crowding around thehoneyed perforation, wasps, flies, earwigs, Sphinx-moths, Pompilidæ,rose-chafers, and, above all, ants...
J. H. Fabre Bernard Miall 「Social Life in the Insect World」
...It is intact, therefore; it is free of any perforation, which would be forthwith revealed under the water by an escape of gas...
J. Henri Fabre Alexander Teixeira de Mattos 「The Life of the Fly」
...The rim is rounded, and the opposite faces are concave,with a perforation in the middle...
Jesse Walter Fewkes 「Archeological Expedition to Arizona in 1895」
...This cavity is not a great perforation, asin the Point Barrow type, but an eccentric pocket, a compromise betweenthe Northern cavity and that of the East...
Otis T. Mason 「Throwing-sticks in the National Museum」
...He found a perforation at the top forming an arch of great width and height, and above it, at the very summit of the peak, were loose pieces of granite of considerable size...
Matthew Flinders 「A Voyage to Terra Australis」
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