This mode of arrangement brings near together fragments which have been found in the same district at different times; in some cases they belong to the same meteoritic fall.
The discovery made by Schiaparelli proves, as already pointed out, that there is a relationship between comets and meteoritic swarms; Schiaparelli himself held the view that a comet and its attendant swarms are merely of identical origin.
In 1794 Chladni, in the memoir already referred to, gave reasons for believing that a meteoritic fireball and a shooting star are only varieties of one phenomenon.
They may even be volatilised into glowing meteoric vapour; but in time this heat is dissipated, and the force of gravity condenses a meteoritic swarm into a single globe.
The planetismal theory is a development of the meteoritic theory, and presents it in an especially attractive guise.
Hence has arisen what is termed the Meteoritic theory, which has been ably advocated for many years by Sir Norman Lockyer, and with some unimportant modifications is now becoming widely accepted.
This explanation, which occupies the whole of my seventh chapter, is founded upon a special mode of origin for Mars, derived from the Meteoritic Hypothesis, now very widely adopted by astronomers and physicists.
A modification of Laplace's theory is the Meteoritic Hypothesis of Sir Norman Lockyer.
On the other hand, it has been recently suggested that the earth may have grown to its present size by the gradual accretion of meteoritic masses.
Other hypotheses, having the same end in view, are the meteoritic hypothesis of Lockyer and the planetesimal hypothesis that has been largely developed in the United States.
Clerk Maxwell, in the Adams prize essay, gave a physico-mathematical demonstration that the rings must be composed of meteoritic matter like gravel.
An approximate coincidence between the chief nebular line and a "fluting" of magnesium having been alleged by Lockyer in support of his meteoritic hypothesis of nebular constitution, it became of interest to ascertain its reality.
It was analyzed by a chemist, who could not identify it as true meteoritic material.
In many instances, objects, or meteoritic stones, that have come from this earth's externality, have had a sulphurous odor.
This especial Mr. Symons rejects the Reading substance because it was not "of true meteoritic material.
Greg, one of the most notable of cataloguers of meteoritic phenomena, records (Phil.
But the other members of the Institute decided that the object was spurious, because it was not of "true meteoritic material.
It's as if "true meteoritic material" were a "rock of ages" to some scientific men.
At that time, the presence of nickel was the "positive" test of meteoritic matter.
As we go along, we shall find the "true test of meteoritic material," which in the past has been taken as an absolute, dissolving into almost utmost nebulosity.
As a mere spectacle, therefore, this new star was of great interest; but a far greater importance attaches to it through the fact that it conforms so admirably to the course that meteoritic hypothesis would predict for it.
The essence of the meteoritic theory, it will be recalled, is that all stars have their origin in nebulae which consist essentially of clouds of relatively small meteorites.
During the ascending series the star is growing both in mass and heat, by the continual accretion of meteoritic matter either drawn to it by gravitation or falling towards it through the proper motions of independent masses.
These causes are (1) the loss of light in passing through the ether, and (2) the stoppage of light by dark stars or diffused meteoritic dust.
Here we have the foundations of the meteoritic hypothesis which is now steadily making its way.
