...Shell obovate; spire conic, of five convex volutions; suture simple; umbilicus open...
William Swainson 「Zoological Illustrations, Volume I」
...Shell univalve, turbinated, inversely conic, convolute; aperture longitudinal, narrow, not toothed; base effuse; spire very short...
William Swainson 「Zoological Illustrations, Volume I」
...Theparticular form of conic section which denotes the orbit of a planet isknown by the name of the ellipse: it is spoken of somewhat lessaccurately as an oval...
Robert Stawell Ball 「The Story of the Heavens」
... The circle and straight line are considered to be special cases ofthese curves, which, taken collectively, are called the conic sections...
George C. Comstock 「A Text-Book of Astronomy」
..., that an inverse square law will move the body in an ellipseor other conic section with the sun in one focus, and that if a body somoves it must be acted on by an inverse square law...
Oliver Lodge 「Pioneers of Science」
...The fact that the force varies as the inverse square of the distance,necessitates motion in an ellipse, or some other conic section, with thesun in one focus...
Oliver Lodge 「Pioneers of Science」
...If it were a material substance, to which the law ofgravitation applied, it must be moving in a conic section with the sunin one focus, and its radius vector must sweep out equal areas in equaltimes...
Oliver Lodge 「Pioneers of Science」
...Icalled it Seymour's Range, and a conic hill at its western end MountOrmerod...
Ernest Giles 「Australia Twice Traversed, The Romance of Exploration」
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