isomery

In 1890, by epimerization between gluconic and mannonic acids, he established the stereochemical nature and isomery of the sugars, and between

Emil Fischer - Biography 1966

"The master of contemporary science, Dumas, recognizes, under the name of isomery, the theories of the alchemists, and Berthelot declares, 'No one can affirm _a priori_ that the fabrication of bodies reputed to be simple is impossible.'

Là-bas Keene [Translator] Wallace 1877