Although Boyle practised the methods which he expounded,.
The formulation of this definition of chemistry was due to Robert Boyle.
Descriptive chemistry was now assuming considerable proportions; the experimental inquiries suggested by Boyle were being assiduously developed; and a wealth of observa tions was being accumulated, for the explanation of which the resources of the dominant theory were sorely taxed.
To him is also due a rigorous examination of the nature of elements and compounds; he held the same views that were laid down by Boyle, and with the same prophetic foresight predicted that some of the elements which he himself accepted might be eventually found to be compounds.
Boyle rejected this terminology, which was only strictly applicable to intelligent beings; and he used the word " affinity " as had been previously done by Stahl and others.