” above them, and all the Phalerons on the other, correspondingly labeled with a sign reading “Materia.” Each of the jars or jugs, except some on the upper shelves that turned out to be vacant, bore a cardboard tag with a number apparently referring to a catalogue; and Willett resolved to look for the latter presently. For the moment, however, he was more interested in the nature of the array as a whole; and experimentally opened several of the lekythoi and Phalerons at random with a view to a rough generalization. The result was invariable. Both types of jar contained a small quantity of a single kind of substance; a fine dusty powder of very light weight and of many shades of dull neutral color. To the colors which formed the only point of variation there was no apparent method of disposal; and no distinction between what occurred in the lekythoi and what occurred in the Phalerons. A bluish-gray powder might be by the side of a pinkish-white one, and any one in a Phaleron might have its exact counterpart in a lekythos. The most individual feature about the powders was their non-adhesiveness. Willett would pour one into his hand, and upon returning it to its jug would find that no residue whatever remained on his palm.