Introduction
Higher Mathematics for Chemical Students (1911)
“The results of a scrutiny of the materials of chemical science from a mathematical standpoint are pronounced in two directions. In the first we observe crude, qualitative notions”
Introduction
Higher Mathematics for Chemical Students (1911)
Context: The results of a scrutiny of the materials of chemical science from a mathematical standpoint are pronounced in two directions. In the first we observe crude, qualitative notions, such as fire-stuff, or phlogiston, destroyed; and at the same time we perceive definite measurable quantities such as fixed air, or oxygen, taking their place. In the second direction we notice the establishment of generalizations, laws, or theories, in which a mass of quantitative data is reduced to order and made intelligible. Such are the law of conservation of matter, the laws of chemical combination, and the atomic theory.
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J. R. Partington 38
British chemist 1886–1965Related quotes
"Muller Bros. Moving & Storage", pp. 200–201
Eight Little Piggies (1993)
“The earliest chemical theory was qualitative in the strictest sense”
Introduction
Higher Mathematics for Chemical Students (1911)
Context: The earliest chemical theory was qualitative in the strictest sense; the so-called Aristotelean doctrine of the four elements assumed that air, water, earth, and fire, were qualities impressed on a primal matter; and the changes of material bodies were explained by the assumption that properties could be taken up by, and impressed upon, or removed from, the base-stuff. Transmutation as a possibility followed at once, and centuries of vain endeavour were required to impress the fact of its impossibility, leading to the true concept of element.

"A plea for the mathematician", Nature, Vol. 1, p. 261.

Introductory
A Treatise on Man and the Development of His Faculties (1842)

Source: "Outlines of the Science of Energetics," (1855), p. 121; Second paragraph
Karl Pearson made similar division of the sciences into abstract and concrete
Source: Classification and indexing in science (1958), Other Chapters, p. 154.

“Anything can become excusable when seen from the standpoint of the result”
Source: The Temple of the Golden Pavilion