The theory of the origin of new species by variation will also explain why a species which has once died out never reappears, and why the fossil fauna and flora recede farther and farther from the living type in proportion as we trace it back to remoter ages. It would also account for the fact, that when we have to intercalate a new set of fossiliferous strata between two groups previously known, the newly discovered fossils serve to fill up gaps between specific or generic types previously familiar to us, supplying often the missing links of the chain, which, if transmutation is accepted, must once have been continuous.
Charles LyellRelated topics
account chain fauna fill flora fossil generic known living once serve set specific strata supplying transmutation variation linksRelated quotes
Even the strongest advocate of the Aryan invasion theory cannot, in all honesty, point out any specific spot outside India to which the origin of any, simply any, aspect of Hinduism could be attributed. Even if, for the purpose of this chapter, it is presumed that the 'Aryans' came from outside India, and that they imposed the Hindu religion on local inhabitants (two questions which will be dealt with subsequently in this book), it will have to be admitted that there is no trace of any foreign connections in Hinduism, much less the consciousness, of any such connections, among Hindus-and least of all, any foreign loyalties, associable with such foreign connections".
Shrikant Talageri
There are so many things to paint in the world – in the cities – so much to see. Does art need to represent this variety and contribute to its proliferation? Can art be that free? The difficulties begin when you understand what it is that the soul will not permit the hand to make. To paint is always to start at the beginning again, yet being unable to avoid the familiar arguments about what you see yourself painting. The canvas you are working on modifies the previous ones in an unending, baffling chain which never seems to finish. (What sympathy is demanded of the viewer! He is asked to 'see' the future links).
Phillip Guston
Gärtner by the results of these transformation experiments, was led to oppose the opinion of those naturalists who dispute the stability of plant species and believe in a continuous evolution of vegetation. He perceives in the complete transformation of one species into another an indubitable proof that species are fixed within limits beyond which they cannot change.
Although this opinion cannot be unconditionally accepted, we find on the other hand in Gartner's experiments a noteworthy confirmation of that supposition regarding variability of cultivated plants which has already been expressed.
Gregor Mendel
Evolution in... cases has clearly been a very slow and almost (if not quite) continuous process, exactly as Darwin had predicted.
We must remember, however, that the organisms studied in this way are far from representative. They are in general the most successful members of animal associations living in very constant marine or lacustrine environments. We have not got similar data for land species... Nor do we possess them for the rarer forms. We shall see... that perhaps dominant species in a uniform environment are the least likely to undergo sudden change to a new type.
J. B. S. Haldane
It is known that very distant nebulae, probably galactic systems like our own, show remarkably high receding velocities whose magnitude increases with the distance. This curious phenomenon promises to provide some important clues for the future development of our cosmological views. It maybe of advantage, therefore, to point out some of the principal facts which any cosmological theory will have to account for. Then a brief discussion will be given of different theoretical suggestions related to the above effect. Finally, a new effect of masses upon light will be suggested which is a sort of gravitational analogue of the Compton effect.
Fritz Zwicky