On Growth and FormUniversity Press, 1917 - 793 páginas |
Términos y frases comunes
accordingly actual adsorption Ammonites animal antheridium appearance arrangement axis become body bone bubbles catenoid cell cell-wall centrosomes chemical co-ordinates colloid compared complex cone configuration constant angle constitute corresponding curvature curve cylinder diagram dimensions direction drop embryology equal equilibrium figure film flagellum flattened fluid Foraminifera growing helicoid hexagonal horn illustrated increase increment instance latter layer length less lines liquid logarithmic spiral magnitude manifested mathematical mechanical membrane molecular Nautilus obvious operculum organism outer particles partition partition-wall phenomena phenomenon phyllotaxis physical plane pole portion precisely pressure problem protoplasm Pteropod radial Radiolarian radius rate of growth ratio recognise represented result segmentation septa shell shew shewn side similar simple skeleton skull solid solid of revolution species sphere spherical spicules structure substance successive surface of revolution surface tension surface-tension symmetrical temperature tend tissue transverse unduloid various velocity wall weight whole whorls
Pasajes populares
Página 5 - And every plant of the field before it was in the earth and every herb of the field before it grew for the LORD God had not caused it to rain upon the earth and there was not a man to till the ground...
Página 158 - Phenomena, and afterwards to tell us how the Properties and Actions of all corporeal Things follow from those manifest Principles, would be a very great step in Philosophy, though the Causes of those Principles were not yet...
Página 200 - Comparative embryology reminds us at every turn that the organism dominates cell-formation, using for the same purpose one, several, or many cells, massing its material and directing its movements, and shaping its organs, as if cells did not exist, or as if they existed only in complete subordination to its will, if I may so speak.
Página 9 - The waves of the sea, the little ripples on the shore, the sweeping curve of the sandy bay between the headlands, the outline of the hills, the shape of the clouds, all these are so many riddles of form, so many problems of morphology, and all of them the physicist can more or less easily read and adequately solve: solving them by reference to...
Página 10 - Of how it is that the soul informs the body, physical science teaches me nothing; and that living matter influences and is influenced by mind is a mystery without a clue. Consciousness is not explained to my comprehension by all the nerve-paths and neurones of the physiologist ; nor do I ask of physics how goodness shines in one man's face, and evil betrays itself in another.
Página 160 - Now, one material system can differ from another only in the configuration and motion which it has at a given instant. To explain differences of function and development of a germ without assuming differences of structure is, therefore, to admit that the properties of a germ are not those of a purely material system.
Página 199 - ... the whole organism subsists only by means of the reciprocal action of the single elementary parts.
Página 46 - Some of the exponents of this theory of heredity have attempted to elude the difficulty of placing a whole world of wonders within a body so small and so devoid of visible structure as a germ, by using the phrase structureless germs.
Página 731 - This process of comparison, of recognising in one form a definite permutation or deformation of another, apart altogether from a precise and adequate understanding of the original "type" or standard of comparison, lies within the immediate province of mathematics, and finds its solution in the elementary use of a certain method of the mathematician. This method is the Method of Coordinates, on which is based the Theory of Transformations t.
Página 340 - ... dans la spéculation , n'est ici qu'un résultat mécanique , et assez imparfait , qui se trouve souvent dans la Nature , et que l'on remarque même dans ses productions les plus brutes j les cristaux et plusieurs autres pierres, quelques sels, etc., prennent constamment cette figure dans leur formation.