amber rubbed takes up light substances, earth mixes with earth, salt collects together from the water of the sea, and the acid moisture of the Stypteria ([Greek: styptêria ygra]), as well as the flocculent salt Trichitis, love the clay of Melos. In inanimate nature all things hasten to unite with each other according to their particular laws. Hence no terrestrial element (and who would dare to include light among the number of such elements?) is to be found anywhere in its pure and primitive simple state. Each as soon as formed tends to enter into new combinations, and the art of man is needed to disjoin and present in a separated state substances which you would seek in vain in the interior of the earth, and in the fluid oceans of air or water. In dead inorganic matter, entire inactivity and repose reign so long as the bonds of affinity continue undissolved, so long as no third substance comes to join itself to the others. But even then, the action and disturbance produced are soon again succeeded by unfruitful repose.
"It is otherwise, however, when the same substances are brought together in the bodies of plants and animals. In these the vital force or power reigns supreme, and regardless of the mutual amity or enmity of the atoms recognised by Democritus, commands the union of substances which in inanimate nature shun each other, and separates those which are ever seeking to enter into combination.
"Now come nearer to me, my friends; look with me on the first of the pictures before us, and recognise in the Rhodian Genius, in the expression of youthful energy, in the butterfly on his shoulder, and in the commanding glance of
