Complete works on chemistryPeterson, 1852 |
Загальні терміни та фрази
absorbed affinity albumen alcohol alkalies ammonia amount analysis animal body ashes atmosphere atoms attraction bile bladder blood brine carbonic acid carnivora cause cent change of matter chemical forces chemistry combination composition compounds condition consequence constituents contain cyanic acid decay decomposed decomposition depends disease dissolved effect elements evaporation excrements experiments fermentation fibrine fluid formation formula gluten heat hippuric acid humic acid humus hydrogen increase influence inorganic iron juice lime liquid magnesia manure membrane motion nature nitrogen nutrition observed obtained organic oxalic acid oxide oxygen particles Peroxide phenomena phosphate Phosphoric acid physiology plants possess potash potatoes pounds produced properties proportion proteine putrefaction respiration roots salt separated silica soda soil soluble solution stances starch substances sugar sulphuric acid supply surface tain temperature tion tissues transformation tube urea uric acid urine vegetable vital force weight wood woody fibre yeast yield
Популярні уривки
Сторінка 7 - Physiology has sufficiently decisive grounds for the opinion, that every motion, every manifestation of force, is the result of a transformation of the structure or of its substance ; that every conception, every mental affection, is followed by changes in the chemical nature of the secreted fluids ; that every thought, every sensation, is accompanied by a change in the composition of the substance of the brain.
Сторінка 17 - Nature speaks to us in a peculiar language, in the language of phenomena; she answers at all times the questions which are put to her; and such questions are experiments.
Сторінка 57 - There is nothing to prevent us from considering the vital force as a peculiar property, which is possessed by certain material bodies, and becomes sensible when their elementary particles are combined in a certain arrangement or form.
Сторінка 60 - As an immediate effect of the manifestation of mechanical force, we see, that a part of the muscular substance loses its vital properties, its character of life ; that this portion separates from the living part, and loses its capacity of growth and its power of resistance. We find that this change of properties is accompanied by the entrance of a foreign body (oxygen) into the composition of the muscular fibre...
Сторінка 8 - ... and hydrogen supplied in the food, it is clear that the amount of nourishment required by the animal body must be in a direct ratio to the quantity of oxygen taken into the system.
Сторінка 15 - All parts of the animal body which have a decided shape, which form parts of organs, contain nitrogen. No part of an organ which possesses motion and life, is destitute of nitrogen; all of them contain likewise carbon and the elements of water, the latter, however, in no case in the proportion to form water. "The chief ingredients of the blood contain nearly 17 per cent, of nitrogen, and no part of an organ contains less than 17 per cent. of nitrogen.
Сторінка 26 - ... gaseous form, or in solution in water. But there are, on the other hand, numerous facts, showing that the formation in plants of substances containing nitrogen, such as gluten, takes place in proportion to the quantity of this element which is conveyed to their roots in the state of ammonia, derived from the putrefaction of animal matter.
Сторінка 60 - ... according to the amount of force employed to produce motion. Nay, it may safely be affirmed, that they are mutually proportional ; that a rapid transformation of muscular fibre, or, as it may be called, a rapid change of matter...
Сторінка 13 - In the animal body the food is the fuel ; with a proper supply^ of oxygen we obtain the heat given out during its oxidation or combustion.
Сторінка 12 - The consumption of oxygen in a given time may be expressed by the number of respirations; it is, therefore, obvious that in the same animal the quantity of nourishment required must vary with the force and number of respirations.