Klaproth was the leading chemist of his time in Germany.
In the investigation of these relations, the physicist and chemist meet on common ground; this union has been attended by fruitful and far-reaching results, and the correlation of physical properties and chemical composition is one of the most important ramifications of physical chemistry.
Bergman, the leading chemist in Sweden.
But it seems pretty clear that if there is any change in weight consequent on chemical change, it is too minute to be of im- portance to the chemist, though the methods of modern physics may settle the question.
Utilitarian, or perhaps rather practical, considerations have very little to do with the subject from a scientific point of view - no more so than the science of chemistry has to do with the art of the manufacturing chemist.