Scientific theories, general characters of, [ 21,] [ 150.]
Seed, alchemical doctrine of, [ 56.]
Seeds of metals, [ 34.]
Simplicity, asserted by alchemists to be the mark of nature, [ 28,] [ 38.]
—— is not necessarily the mark of verity, [ 138.]
Solids, liquids, and gases, atomic explanation of, [ 19.]
Stahl, his phlogistic theory, [ 130.]
Stone, the philosopher's, [ 32,] [ 35,] [ 49,] [ 58,] [ 72.]
Thorium, radio-activity of, [ 183,] [ 193.]
Transmutation, alchemical doctrine of, [ 47,] [ 74,] [ 123.]