undecomposable

It seems to me that this reasoning rests on an unscientific use of the term _element_; it rests on giving to that class-name the meaning, _substances asserted to be undecomposable_.

The Story of Alchemy and the Beginnings of Chemistry M. M. Pattison Muir

A line of demarcation is drawn between _elements_, meaning thereby forms of matter said to be undecomposable but probably capable of separation into unlike parts, and _true elements_, meaning thereby groups of identical undecomposable particles.

The Story of Alchemy and the Beginnings of Chemistry M. M. Pattison Muir

_ -- Calcium oxide or lime has been known from a very remote period, and was for a long time considered to be an elementary or undecomposable earth.

Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" Various

Since those early days of the century when the electric battery performed its miracles and seemingly reached its limitations in the hands of Davy, many new elementary substances have been discovered, but no single element has been displaced from its position as an undecomposable body.

A History of Science: in Five Volumes. Volume IV: Modern Development of the Chemical and Biological Sciences 1904

Some silicates are completely decomposed by such treatment; but it saves time (unless one is sure that no undecomposable silicate is present) to treat these in the same way as the others.

A Text-book of Assaying: For the Use of Those Connected with Mines. Cornelius Beringer 1886

So far as our knowledge extends, there are about sixty-six of these undecomposable bodies, of which about one half occurs in but exceedingly minute quantities, and a considerable number of the others exists in comparatively small amounts.

The Stock-Feeder's Manual the chemistry of food in relation to the breeding and feeding of live stock Charles Alexander Cameron 1875

Torture them as we will in our crucibles; expose them as we please to the highest temperature of a wind furnace, or to the more intense heat evolved by a powerful galvanic battery; subject them to the influence of any agent, or force, or process we may choose, and still they will yield nothing but iron, sulphur, and oxygen: hence these undecomposable bodies are regarded as

The Stock-Feeder's Manual the chemistry of food in relation to the breeding and feeding of live stock Charles Alexander Cameron 1875

The earliest impressions which the mind can assimilate are the undecomposable sensations produced by resistance, light, sound, etc.

Essays on Education and Kindred Subjects Everyman's Library Herbert Spencer 1861

Putting aside the muscular sense, which had not come into view in Hume's time, the questions arise whether these are all the simple undecomposable materials of thought? or whether others exist of which Hume takes no cognizance.

Hume (English Men of Letters Series) Thomas Henry Huxley 1860

The effects which take place when a succession of conducting decomposable and undecomposable substances are placed in the electric circuit, as, for instance, of wires and solutions, or of air and solutions

Experimental Researches in Electricity, Volume 1 Michael Faraday 1829