Their hypothesis explains so many facts.
The schedule now called for hypothesis testing.
An unproven hypothesis of the existence of things can be useful.
Among the Gnostics we meet with the hypothesis of emanation, as, for example, in the curious cosmic theory of Valentinus.
In the third part of this work he inclines to a thoroughly natural hypothesis respecting the genesis of the physical world, and adds in the fourth part that the same kind of explanation might be applied to the nature and formation of plants and animals.
The special Darwinian hypothesis - natural " selection " - may or may not be true; it was at least a fruitful suggestion.
He further recognizes a progress in the production of vegetable and animal forms, though this part of his theory is essentially crude and unscientific. More important in relation to the modern problems of evolution is his thoroughly materialistic way of explaining the origin of sensation and knowledge by help of his peculiar hypothesis of effluvia and pores.
His theory of evolution is essentially pantheistic, and he does not employ his hypothesis of monads in order to work out a more mechanical conception.
His paper on the variation of the specific heat with temperature, which appeared in 1907, was the first extension of Planck's fundamental hypothesis, and its verification in essentials is one of the most convincing arguments in its favour.
Modern naturalists consider that many of the problems of Australia's remarkable fauna and flora can be best explained by the following hypothesis: - The region now covered by the antarctic ice-cap was in early Tertiary times favoured by a mild climate; here lay an antarctic continent or archipelago.
No speculation of hypothesis has been propounded to account satisfactorily for the origin of the Australian flora.
These were: (I) that the earth must be spherical, because of the tendency of matter to fall together towards a common centre; (2) that only a sphere could always throw a circular shadow on the moon during an eclipse; and (3) that the shifting of the horizon and the appearance of new constellations, or the disappearance of familiar stars, as one travelled from north to south, could only be explained on the hypothesis that the earth was a sphere.
The Chemistry of the Sun (1887) is an elaborate treatise on solar spectroscopy based on the hypothesis of elemental dissociation through the intensity of solar heat.
Nowadays "=c" is called the "continuum hypothesis" and can be taken as an axiom of set theory.
Baeyers hypothesis was entertained by botanists partly because it explained the gaseous interchanges accompanying photosynthesis.
The atomic theory has been of priceless value to chemists, but it has more than once happened in the history of science that a hypothesis, after having been useful in the discovery Present and the co-ordination of knowledge, has been aban- position doned and replaced by one more in harmony with later of the discoveries.
During this anxious period he appears to have borne himself with characteristic dignity, such as is consistent with no other hypothesis than the consciousness of innocence.
One hypothesis supplants the various principles of life; the rule of absolute mechanism is as complete in the animal as in the cosmos.
As a step towards such hypothesis it has been noted that the Antarctic, the South African, and the Australian floras have many types in common.
On the latter hypothesis it has been generally assumed that the wild camels are the descendants of droves of the domesticated breed which escaped when certain central Asian cities were overwhelmed by sand-storms. This theory, according to Professor Leche, is rendered improbable by Dr Sven Hedin's observations on the habits and mode of life of the wild camel.
These theories, however, contain little that bears directly on the hypothesis of a natural evolution of things.
He is indeed careful to keep right with the orthodox doctrine of creation by saying that he does not believe the world actually arose in this mechanical way out of the three kinds of elements which he here supposes, but that he simply puts out his hypothesis as a mode of conceiving how it might have arisen.
§ 12), where he is arguing in favour of the hypothesis, afterwards elaborated by Leibnitz, of a graduated series of minds (species of spirits) from the Deity down to the lowest animal intelligence.
Theory, and the effect of Herodotus's hypothesis that the Nile must flow from west to east before turning north in order to balance the Danube running from west to east before turning south lingered in the maps of Africa down to the time of Mungo Park.'
Accurately, the amazing facts of Christ and primitive Christianity, every imaginable hypothesis is canvassed.
It may be observed, too, that the hypothesis of a primitive compact mass (sphaerus), in which love (attraction) is supreme, has some curious points of similarity to, and contrast with, that notion of a primitive nebulous matter with which the modern doctrine of cosmic evolution usually sets out.
In the worst case scenario of the hypothesis, the model maker is forced just to formulate hypotheses about them.
Growth, therefore, was, on this hypothesis, partly a process of simple evolution, and partly of what has been termed syngenesis.
The school of Cuvier was lamentably deficient in embryologists; and it was only in the course of the first thirty years of the igth century that Prevost and Dumas in France, and, later on, Ddllinger, Pander, von Bar, Rathke, and Remak in Germany, founded modern embryology; and, at the same time, proved the utter incompatibility of the hypothesis of evolution as formulated by Bonnet and Haller with easily demonstrable facts.
For it is almost impossible to prove that any structure, however rudimentary, is useless - that is to say, that it plays no part whatever in the economy; and, if it is in the slightest degree useful, there is no reason why, on the hypothesis of direct creation, it should not have been created.
The careful and complete collection, by Franke, of the philological evidence at present available, has raised this hypothesis into a practical certainty.