... The crest, when little developed, arises from a fleshy mass, but, when much developed, from a hemispherical protuberance of the skull... 
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...He states that with fowls, when the crest is not much developed, it is supported on a fatty mass; but when much developed, it is always supported on a bony protuberance of variable size...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...These Sultan skulls differed from those of English Polish fowls in the frontal bones, anteriorly to the protuberance, not being broad...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...With the protuberance of the frontal bones the shape of the internal surface of the skull and of the brain is greatly modified...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...Of the size of a camel, and of a snowy whiteness, with a protuberance onthe back, is a native of Madagascar and some other islands...
George Vasey 「Delineations of the Ox Tribe」
...They rise from a rough bony protuberance on the forehead, called the “burr...
Mayne Reid 「The Hunters' Feast」
...The bird seemed intimidated for a moment,but soon returned to the charge; and covering her body withone of her wings as a buckler, struck her enemy with thebony protuberance of the other...
Various 「Natural History in Anecdote」
...In every case the first traceof the limb in the embryo is a very simple protuberance that grows out of theside of the hyposoma...
Ernst Haeckel 「The Evolution of Man」
...The sexual protuberance or phallus is the chief organ of the sexualsense (p...
Ernst Haeckel 「The Evolution of Man」
...The jawlike pincers on itheld the limp form of an officer in its sucking grip, while above, ina protuberance like a gnarled horn, a great eye glared into Thorpe'swith devilish hatred...
Various 「Astounding Stories of Super-Science, June, 1930」
...The attraction ofexternal bodies is able to grasp this protuberance, and thereby forcethe earth's axis of rotation to change its direction...
Robert Stawell Ball 「The Story of the Heavens」
...It will be obvious that the nearer thedisturbing body approaches to the earth the greater is the leverage(if we may use the expression) which is afforded by the protuberance atthe equator...
Robert Stawell Ball 「The Story of the Heavens」
...Third, the explanation of this motion by Newton as due to the pull ofthe moon on the equatorial protuberance of the earth...
Oliver Lodge 「Pioneers of Science」
...Knowing the sun's mass and distance, it was not difficult for Newton tocalculate the height of the protuberance caused by it in a pasty oceancovering the whole earth...
Oliver Lodge 「Pioneers of Science」
...4397 (M 24) is usually described as resembling,to the naked eye, a protuberance on the edge of theMilky Way...
Garrett Serviss 「Pleasures of the telescope」
...The protuberance at its equator must, no doubt, beattributed to the high velocity with which the planet is rotating...
Robert Stawell Ball 「The Story of the Heavens」
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