“There are various causes for the generation of force: a tensed spring, an air current, a falling mass of water, fire burning under a boiler, a metal that dissolves in an acid-one and the same effect can be produced by means of all these various causes. But in the animal body we recognise only one cause as the ultimate cause of all generation of force, and that is the reciprocal interaction exerted on one another by the constituents of the food and the oxygen of the air. The only known and ultimate cause of the vital activity in the animal as well as in the plant is a chemical process.” WellsMeanBodyScienceFallForceCausesProcessWaterAnimalKnownFireGenerationsAirEffectsActivityMassSpringUltimatePlantCurrentsVariousBurningChemicalsMetalsInteractionOxygenAcidRecogniseConstituentsReciprocalBoilerFire Burning Author:Justus von Liebig
“Since the discovery of oxygen the civilised world has undergone a revolution in manners and customs. The knowledge of the composition of the atmosphere, of the solid crust of the earth, of water, and of their influence upon the life of plants and animals, was linked to that discovery. The successful pursuit of innumerable trades and manufactures, the profitable separation of metals from their ores, also stand in the closest connection therewith.” WorldEarthWaterAnimalSuccessfulInfluenceRevolutionDiscoveryConnectionsTradePlantSeparationPursuitMannersAtmosphereCustomsMetalsClosestCompositionLinkedOxygenProfitableCivilisedPlants And Animals Book:Familiar Letters on Chemistry, in its relation to Physiology, Dietetics, Agriculture, Commerce and Political Economy: Edited by John Blyth Source: Familiar Letters on Chemistry, in its relation to Physiology, Dietetics, Agriculture, Commerce and Political Economy: Edited by John Blyth
“A manure containing several ingredients acts in this wise: The effect of all of them in the soil accommodates itself to that one among them which, in comparison to the wants of the plant, is present in the smallest quantity.” WantScienceWiseEffectsPlantSoilComparisonIngredientsQuantitySmallestAccommodateContainingManure Author:Justus von Liebig
