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animal forms animal kingdom animalcule Articulata axis backbone become bird body branches breathe called capsule cats cells Cercaria characters cilia classes classification colony common Comparative Anatomy complex Crustaceans cuttlefish Cuvier desiccation digestive tube dirt or moss distinct dogs earth eggs embryo ence Entomostraca Eotifers evaporation existence experiments fact feelers fish fixity of species four thousand frog genera Geoffroy hare Hydra hypothesis idea individual Infusoria insects labor languages larva Leuwenhoek living lungs male mals mantle membrane microscope Mollusca mollusks mouth Muslin mussel nacre Natural History naturalists observed once Opalina organs Origin of Species original oyster parasites pearls Pfaff plants Polypes ponds Protozoa rabbit races resemble resuscitation revive sand shells stomach studies surface swimming tail Tardigrade tentacles things thread-worms tion true variable varieties Vertebrata vertebrate Volvox watch-glass worms young youth zoologists
124 페이지 - Most wretched men Are cradled into poetry by wrong, They learn in suffering what they teach in song.
119 페이지 - As buds give rise by growth to fresh buds, and these, if vigorous, branch out and overtop on all sides many a feebler branch, so by generation I believe it has been with the great Tree of Life, which fills with its dead and broken branches the crust of the earth, and covers the surface with its ever-branching and beautiful ramifications.
117 페이지 - It is a truly wonderful fact — the wonder of which we are apt to overlook from familiarity — that all animals and all plants throughout all time and space should be related to each other in groups subordinate to groups, in the manner which we everywhere behold...
101 페이지 - 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.
117 페이지 - On the view that each species has been independently created, I can see no explanation of this great fact in the classification of all organic beings; but, to the best of my judgment, it is explained through inheritance and the complex action of natural selection, entailing extinction and divergence of character, as we have seen illustrated in the diagram.
24 페이지 - It has not been sufficiently insisted on, that in the various branches of Social Science there is an advance from the general to the special, from the simple to the complex, analogous with that which is found in the series of the sciences, from Mathematics to Biology. To the laws of quantity comprised in Mathematics and...
60 페이지 - ... moisture of the breath has evaporated, the wafer be shaken off, we shall find that the whole polished surface is not as it was before, although our senses can detect no difference ; for if we breathe again upon it the surface will be moist everywhere except on the spot previously sheltered by the wafer, which will now appear as a spectral image on the surface. Again and again we breathe, and the moisture evaporates, but' still the spectral wafer reappears. This experiment succeeds after a lapse...
61 페이지 - ... spectre of the key will again appear. In the case of bodies more highly phosphorescent than paper, the spectres of many different objects which may have been laid on it in succession will, on warming, emerge in their proper order. This is equally true of our bodies and our minds. We are involved in the universal metamorphosis. Nothing leaves us wholly as it found us. Every man we meet, every book we read, every picture or landscape we see, every word or tone we hear, mingles with our being and...
103 페이지 - Latin ; if all historical documents previous to the fifteenth century had been lost ; if tradition even were silent as to the former existence of a Roman empire, a mere comparison of the six Romance dialects would enable us to say that at some time there must have been a language from which all these modern dialects derived their origin in common ; for without this supposition it would be impossible to account for the facts exhibited by these dialects.
104 페이지 - But a change from je suis to tii es is inexplicable by the light of French grammar. These forms could not have grown, so to speak, on French soil, but must have been handed down as relics from a former period — must have existed in some language antecedent to any of the Romance dialects.