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Updated: May 17, 2025
In order to explain what these sections are, let ABKF be the principal section through the axis of the crystal ACK, in which there will also be the axis SS of a spheroidal wave of light spreading in the crystal from the centre C; and the straight line which cuts SS through the middle and at right angles, namely PP, will be one of the major diameters.
On the proper Motion of the Solar System, and the various Changes that have occurred among the Fixed Stars since the Time of Flamsteed. Phil. Trans., vol. lxxiv. On some remarkable Appearances in the Polar Regions of Mars, the Inclination of its Axis, the Position of its Poles, and its Spheroïdal Form. Some Details on the real Diameter of Mars, and on its Atmosphere.
Pepper records a case in which a knife was thrust through the spheroidal fissure, wounding a large meningeal vein, causing death from intracranial hemorrhage. Nelaton describes an instance in which the point of an umbrella wounded the cavernous sinus and internal carotid artery of the opposite side, causing the formation of an arteriovenous aneurysm which ultimately burst, and death ensued.
The ice, however, was broken, and bolder attempts quickly followed. The first free and unfettered balloon voyage was performed very soon after the event mentioned at the end of the last chapter. It was a daring attempt, and attended with great danger. A balloon made by Montgolfier was used. It was 75 feet high, 45 feet wide, and spheroidal in form heated air being the motive power.
What has been said of the animal world is no less true of plants. Imbedded in the protoplasm at the broad, or attached, end of the nettle hair, there lies a spheroidal nucleus.
"As the size of the earth," he says, "has been demonstrated by other writers, we shall here take for granted and receive as accurate what they have advanced. We shall also assume that the earth is spheroidal, that its surface is likewise spheroidal and, above all, that bodies have a tendency towards its centre, which latter point is clear to the perception of the most average understanding.
I found also the value of CG the semi-diameter parallel to the tangent ML to be 98,779. Now passing to the investigation of the refractions which obliquely incident rays must undergo, according to our hypothesis of spheroidal waves, I saw that these refractions depended on the ratio between the velocity of movement of the light outside the crystal in the ether, and that within the crystal.
The Echinidea, again, are frequently quoted as exhibiting a gradual passage from a more generalized to a more specialized type, seeing that the elongated, or oval, Spatangoids appear after the spheroidal Echinoids.
Now proceeding to reason back from the past to the present, it has been shown that the abandonment of successive equatorial belts by the contracting solar mass must have ensued in accordance with known mechanical laws; and in similar wise, under ordinary circumstances each belt must have parted into fragments, and the fragments chasing each other around the same orbit, must have at last coalesced into a spheroidal planet.
After this its activity diminished, in a few minutes the body became quite still, leaving only a feeble motion in the flagellum, which soon fell upon the body-substance and was lost. All that was left now was a still spheroidal glossy speck, tinted with a brownish yellow.
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