Quotes from book
A New System of Chemical Philosophy

A New System of Chemical Philosophy
John Dalton
John Dalton photo

“When we attempt to conceive the number of particles in an atmosphere, it is somewhat like attempting to conceive the number of stars in the universe; we are confounded with the thought. But if we limit the subject, by taking a given volume of any gas, we seem persuaded that, let the divisions be ever so minute, the number of particles must be finite; just as in a given space of the universe, the number of stars and planets cannot be infinite.”

John Dalton book A New System of Chemical Philosophy

Source: A New System of Chemical Philosophy (1808), Ch. III On Chemical Synthesis

John Dalton photo

“Chemical analysis and synthesis go no farther than to the separation of particles one from another, and to their reunion. No new creation or destruction of matter is within the reach of chemical agency. We might as well attempt to introduce a new planet into the solar system, or to annihilate one already in existence, as to create or destroy a particle of hydrogen. All the changes we can produce, consist in separating particles that are in a state of cohesion or combination, and joining those that were previously at a distance.”

John Dalton book A New System of Chemical Philosophy

Source: A New System of Chemical Philosophy (1808), Ch. III. On Chemical Synthesis

John Dalton photo

“A pure elastic fluid is one the constituent particles of which are all alike, or in no way distinguishable. Steam, or aqueous vapour, hydrogenous gas, oxygenous gas… and several others are of this kind. …Whatever …may be the shape or figure of the solid atom abstractedly, when surrounded by such an atmosphere it must be globular; but as all the globules in any small given volume are subject to the same pressure, they must be equal in bulk, and will therefore be arranged in horizontal strata, like a pile of shot.”

John Dalton book A New System of Chemical Philosophy

Source: A New System of Chemical Philosophy (1808), Ch. II. On the Constitution of Bodies, Sect. 1. On the Constitution of Pure Elastic Fluids

John Dalton photo

“Now it is one great object of this work, to shew the importance and advantage of ascertaining the relative weights of the ultimate particles, both of simple and compound bodies, the number of simple elementary particles which constitute one compound particle, and the number of less compound particles which enter into the formation of one more compound particle.”

John Dalton book A New System of Chemical Philosophy

Source: A New System of Chemical Philosophy (1808), Ch. III. On Chemical Synthesis

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