Comentarios de la gente - Escribir un comentario
No encontramos ningún comentario en los lugares habituales.
Otras ediciones - Ver todas
action actual adaptation animals appears argument bring cach causes changes common conclusion connection consider continued Darwin derivation direct distinct doctrine doubt existence expected explain facts final follow force forms froin ground havo human hypothesis idea illustration individuals infer instance kinds known laws least less liavo liko limited lines linvo living material matter means mind moro natural naturalists North object organic origin particular perhaps period plants present principle probably produced proof prove question races reason referred regard region scientific selection similar somo spccics species suppose takes tertiary theory thero theso thic thicory things thint thio thoso thought tion tlic tlio variation varieties vary whilo whole wholo
Página 131 - And God said, Let the earth bring forth the living creature after his kind, cattle, and creeping thing, and beast of the earth after his kind: and it was so.
Página 145 - To my mind it accords better with what we know of the laws impressed on matter by the Creator, that the production and extinction of the past and present inhabitants of the world should have been due to secondary causes, like those determining the birth and death of the individual.
Página 231 - England and some other parts of Europe. So the Sequoias, now remarkable for their restricted station and numbers, as well as for their extraordinary size, are of an ancient stock ; their ancestors and kindred formed a large part of the forests which flourished throughout the polar regions, now desolate and iceclad, and which extended into low latitudes in Europe.
Página 271 - But the only distinct meaning of that word is stated, fixed, or settled; since what is natural, as much requires and presupposes an intelligent agent to render it so, ie to effect it continually or at stated times, as what is supernatural or miraculous does to effect it for once. And from hence it must follow, that persons...
Página 29 - Altogether at least a score of pigeons might be chosen, which, if shown to an ornithologist, and he were told that they were wild birds, would certainly be ranked by him as well-defined species.
Página 176 - Hilaire, that is, against the supposition that time brings about a gradual alteration of whole species ; but it goes for little against Darwin, unless it be proved that species never vary, or that the perpetuation of a variety necessitates the extinction of the parent breed. For Darwin clearly maintains— what the facts warrant— that the mass of a species remains fixed so long as it exists at all, though it may set off a variety now and then. The variety may finally supersede the parent form...
Página 295 - ... part, without sensible effects. The little prisoner is not crushed and suddenly destroyed, as is sometimes supposed, for I have often liberated captive flies and spiders, which sped away as fast as fear or joy could hasten them. At other times I have found them enveloped in a fluid of mucilaginous consistence, which seems to act as a solvent, the insects being more or less consumed in it.
Página 15 - ... either hand, and say how much of truth there may be in each? The present reviewer has not the presumption to undertake such a task. Having no prepossession in favor of naturalistic theories, but struck with the eminent ability of Mr. Darwin's work, and charmed with its fairness, our humbler duty will be performed if, laying aside prejudice as much as we can, we shall succeed in giving a fair account of its method and argument, offering by the way a few suggestions, such as might occur to any...
Página 31 - If strange and rare deviations of structure are really inherited, less strange and commoner deviations may be freely admitted to be inheritable. Perhaps the correct way of viewing the whole subject would be, to look at the inheritance of every character whatever as the rule, and non-inheritance as the anomaly.