As I had first entered the room I had taken in its contents with a single, quick glance and I had seen there precisely the things that I most needed, and now that I had disposed of Haj Osis I crossed quickly to one of the windows and tore down a part of the silk hangings that covered it. It was a full length of fine, light silk and very wide, since it had been intended to hang in graceful folds as an underdrape with heavier hangings. At the ornate desk where the Jed of Tjanath signed his decrees, I went to work. First I took the vial from my pocket pouch and unstoppered it; then I wadded the silk into a ball and because of its wonderful fineness I could compress it within my two hands. Fastening the ball of silk into a loosely compressed mass with strips torn from another hanging, I slowly poured the contents of the vial over it, turning the ball with the point of Haj Osis' dagger. Remembering Phor Tak's warning, I was careful not to let any of the contents of the vial come in contact with my flesh and I could readily see why one had to be careful as I watched the ball of silk disappear before my eyes. Knowing that the compound of invisibility would dry almost as rapidly as it impregnated the silk, I waited only a brief instant after emptying about half the contents of the vial upon the ball. Then, groping with my fingers, I found the strings that held it into its roughly spherical shape and cut them, after which I shook the silk out as best I could. For the most part it was invisible, but there were one or two spots that the compound had not reached. These I quickly daubed with some of the liquid remaining in the vial, which I now restoppered and replaced in my pocket pouch. So much depended upon the success of my experiment that I almost feared to put it to the test, but it must be tested and there could be only a few xats remaining before the warriors of Haj Osis would burst into the ante-chamber. By feel alone I draped the silk over my head so that it fell all about me. Through its thin and delicate meshes I could see objects at close range quite well enough to make my way about. I crossed to Haj Osis and took the blind from his eyes, at the same time stepping quickly back. He looked hurriedly and affrightedly about him. "Who did that?" he demanded, and then half to himself, "he is gone." For a moment he was silent, rolling his eyes about in all directions, searching every nook and corner of the apartment. Then an expression that was part hope and part relief came to his eyes. "Quick!" he shouted in a loud voice. "The guard! He has escaped!" I breathed a sigh of relief--if Haj Osis could not see me, no one could--my plan had succeeded.