The Variation of Animals and Plants Under Domestication, Volume 1D. Appleton, 1887 |
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The Variation of Animals and Plants Under Domestication, Volume 1 Charles Darwin Visualização integral - 1868 |
The Variation of Animals and Plants Under Domestication, Volume 1 Charles Darwin Visualização integral - 1882 |
The Variation of Animals and Plants Under Domestication, Volume 1 Charles Darwin Visualização integral - 1875 |
Palavras e frases frequentes
aboriginal animals appearance bankiva Barbs beak Bechstein birds blue Blyth body bones bud-variation buds Carriers cattle cervical vertebra character Cochins colour common crest crossed cultivated descended distinct species dogs domestic breeds domestic pigeon domestic rabbits domestic races dovecot duck ears elongated English Pouter fact fanciers Fantails feathers female feral flowers frontal bones fruit Gardener's Chron Gardener's Chronicle grafted Hist horses Hort hybrids inches India inherited instance Islands kinds latter legs length livia lop-eared rabbits lumbar vertebræ maize male mammæ modified natural nearly nectarine niata observed parent parent-form peach peculiar pigeons pigs plants plumage pollen Porto Santo Poultry Pouters produced propagated remarkable resemble reversion rock-pigeon Runts seed seedlings seen selection shape Short-faced Tumbler skeletons skin skull specimens sternum stripes sub-breeds Sub-race sub-varieties tail tail-feathers Tegetmeier trees tubers Turbits variable variation varieties vary vertebræ whilst wild rabbit wild rock-pigeon wings Zoolog
Passagens conhecidas
Página 9 - In scientific investigations it is permitted to invent any hypothesis, and if it explains various large and independent classes of facts it rises to the rank of a well-grounded theory.
Página 472 - Flexible cloth, 45 cents. MAN'S PLACE IN NATURE. 12mo. Cloth, $1.25. ON THE ORIGIN OF SPECIES. 12mo. Cloth, $1.00. MORE CRITICISMS ON DARWIN, AND ADMINISTRATIVE NIHILISM. 12mo. Limp cloth, 50 cents. MANUAL OF THE ANATOMY OF VERTEBRATED ANIMALS.
Página 26 - ... it is highly probable that the domestic dogs of the world are descended from two well-defined species of wolf (viz. C. lupus and C. latrans), and from two or three other doubtful species...
Página 472 - Cloth, $1.50. AMERICAN ADDRESSES; WITH A LECTURE ON THE STUDY OF BIOLOGY. 12mo. Cloth, $1.25. PHYSIOGRAPHY: AN INTRODUCTION TO THE STUDY OF NATURE. With Illustrations and Colored Plates. 12mo. Cloth, $2.50.
Página 3 - By CHARLES DARWIN, LL. D., FRS With Illustrations. Revised edition. 2 vols., 12mo. Cloth, $5.00. " We shall learn something of the laws of inheritance, of the effects of crossing different breeds, and on that sterility which often supervenes when organic beings are removed from their natural conditions ot life, and likewise when they are too closely interbred."— from the Introduction.
Página 7 - So again it is difficult to avoid personifying the word Nature; but I mean by Nature, only the aggregate action and product of many natural laws, and by laws the sequence of events as ascertained by us.
Página 65 - Eng. translat., p. 235) the probability of the descent of all the existing races from a single, dun-coloured, more or less striped, primitive stock, to which our horses occasionally revert.
Página 94 - ... cattle; but during the great droughts, when so many animals perish, the niata breed is under a great disadvantage, and would be exterminated if not attended to; for the common cattle, like horses, are able just to keep alive, by browsing with their lips on twigs of trees and reeds ; this the niatas cannot so well do, as their lips do not join, and hence they are found to perish before the common cattle. This strikes me as a. good illustration of how little we are able to judge from the ordinary...
Página 26 - C. latrans), and from two or three other doubtful species (namely, the European, Indian, and North African wolves) ; from at least one or two South American canine species ; from several races or species of jackal ; and perhaps from one or more extinct species.
Página 258 - to every hen belongs an individual peculiarity in the form, colour, and size of her egg, which never changes during her life-time, so long as she remains in health, and which is as well known to those who are in the habit of taking her produce, as the hand-writing of their nearest acquaintance.