The Persistence of force: correlation of the vital and physical forcesAppleton, 1872 |
Términos y frases comunes
acid aggregation Algæ alkaline ammonic ammonic tartrate amongst animals appearance Archebiosis atoms Bacteria Bacterium bodies boiled capable carbon carbonic acid colloidal complex compounds containing corpuscles diameter doctrine ethereal waves evidence evolution existence experiments fact favour fermentation filaments fluid formation Fungi fungus germinal vesicle germs gonidia gradually granular granules growth Haeckel heat hermetically sealed influence infusion infusoria kind Leptothrix less living matter living organisms living things manifestations mass ments micrococci minute mode of origin molecular molecules Monera motion movements muscle nature neutral nitrogen not-living novo nucleus occur organic matter ovum oxygen particles Pasteur pellicle phenomena physical forces plants plastide Pouchet pre-existing present previously produced Prof properties protoplasm reproductive says Schwann seen similar sodic phosphate solution specks spores substance taking place temperature tion tissues Torula Torula cells tube turnip undergo vegetable Vibriones vital whilst zoospores
Pasajes populares
Página 311 - ... of an electric spark, which traverses a mixture of oxygen and hydrogen? What justification is there, then, for the assumption of the existence in the living matter of a something which has no representative, or correlative, in the not living matter which gave rise to it? What better philosophical status has "vitality
Página 8 - ... great question which has so often been the subject of speculation among philosophers; namely, — What is Heat? Is there any such thing as an igneous fluid? Is there anything that can with propriety be called caloric?
Página 10 - When we consider the circumstances of Mayer's life, and the period at which he wrote, we cannot fail to be struck with astonishment at what he has accomplished. Here was a man of genius working in silence, animated solely by a love of his subject, and arriving at the most important results, some time in advance of those whose lives were entirely devoted to natural philosophy.
Página 93 - absolute commencement of organic life on the globe," which the reviewer says I {' cannot evade the admission of," I distinctly deny. The affirmation of universal evolution is in itself the negation of an "absolute commencement " of anything. Construed in terms of evolution, every kind of being is conceived as a product of modifications wrought by insensible gradations on a pre-existing kind of being...
Página 58 - An active Principle : — howe'er removed From sense and observation, it subsists In all things, in all natures; in the stars Of azure heaven, the unenduring clouds, In flower and tree, in every pebbly stone That paves the brooks, the stationary rocks, The moving waters, and the invisible air. Whate'er exists hath properties that spread Beyond itself, communicating good, A simple blessing, or with evil...
Página 434 - Nec species sua cuique manet, rerumque novatrix ex aliis alias reddit natura figuras: nec perit in toto quicquam, mihi credite, mundo, sed variat faciemque novat, nascique vocatur incipere esse aliud, quam quod fuit ante, morique, desinere illud idem. cum sint huc forsitan illa, haec translata illuc, summa tamen omnia constant.
Página 254 - Their mingled atoms in each other fix. Thus Nature's hand the genial bed prepares With friendly discord, and with fruitful wars. From hence the surface of the ground...
Página 160 - the ultimate parts of the organism are not cells nor nuclei, but the minute molecules from which these are formed. They possess independent physical and vital properties, which enable them to unite and arrange themselves so as to produce higher forms. Among these are nuclei, cells, fibres, and membranes, all of which may be produced directly from molecules. The development and growth of organic tissues is owing to the successive formation of histogenetic and histolytic molecules. The breaking '...
Página 163 - We set out with molecules one degree higher in complexity than those molecules of nitrogenous colloidal substance into which organic matter is resolvable ; and we regard these somewhat more complex molecules as having the implied greater instability, greater sensitiveness to surrounding influences, and consequent greater mobility of form.
Página 7 - When I say of Motion that it is as the genus of which heat is a species, I would be understood to mean, not that heat generates motion or that motion generates heat (though both are true in certain cases), but that Heat itself, its essence and quiddity, is Motion and nothing else...