Elements, alchemical, contrasted with chemical, [ 165;]
radio-active substances contrasted with, [190-192.]
—— the alchemical, [ 49,] [ 54,] [ 60.]
—— the chemical, [ 61,] [ 62,] [ 161.]
—— use of word, by phlogisteans, [ 133.]
Essence, the alchemical, [ 32,] [ 35,] [ 49,] [ 58,] [ 72.]
Fire, different meanings of the word, [ 53.]
Gates, the alchemical, [ 69.]
Gold, considered by alchemists to be the most perfect metal, [ 40,] [ 45.]
Greek thinkers, their atomic theory, [ 15.]
Hermes Trismegistus, [ 37.]