...It is not a thing (mark ye) that any one could do, but takes a gentleman of penetration... 
Robert Louis Stevenson 「Kidnapped」
...“Faith, my little Chauvelin,I should have thought that, with your penetration, you would have guessed thatan atmosphere composed of fogs and virtues would never suit Marguerite St...
Baroness Orczy 「The Scarlet Pimpernel」
...The veil of color and race still hung thickly between her and her pupils; and yet she seemed to see some points of penetration...
W. E. B. Du Bois 「The Quest of the Silver Fleece」
...The fang entered just under the fingernail and was directed downward, the venom being injected about five millimeters below the site of fang penetration...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...You are probably aware of thefact that the property of penetration possessed by all waves is afunction of their frequency...
Victor Rousseau 「Astounding Stories of Super-Science January 1930」
...This prompt penetration of his disguise was something he had notbargained for...
Roman Frederick Starzl 「In the Orbit of Saturn」
...However, this capacityof absorption has definite limits in each variety of plasm; living plasmis not soluble in water, but absolutely resists the penetration of anywater beyond this limit...
E. Walter Maunder 「Are the Planets Inhabited?」
...It was on the 25th of March, 1655, that the first satellite of Saturnwas detected by Huyghens, to whose penetration we owe the discovery ofthe true form of the ring...
Robert Stawell Ball 「The Story of the Heavens」
...It is, however, remarkablethat even his penetration and care did not preserve him from errorswith regard to these very delicate objects...
Robert Stawell Ball 「The Story of the Heavens」
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