At this time Jimmie O'Hara elected to start something new by hitting the Professor a workmanlike blow on the back of the head with the butt of his automatic. The next thing Bland or anyone else present knew the unconscious body of the Professor was on the table and Jimmie was groping for the concealed switch. At length he found it, and the green flash of light appeared in the bulb, followed by the brilliant orange manifestation. "What in hell are you doing?" gasped Bland. "De-astralizing the Professor," replied O'Hara cheerfully. "Don't you get the idea yet? Watch!" Fascinated, the four men saw the terrific emanation take its baleful effect. As before, the body commenced to expand and gradually took on a misty outline. Larger and larger it grew, until finally it had become a vast cloud of intangible nothingness which filled the room like some evil nebula. A cry of consternation from the detective aroused Jimmie. Skip Handlon's astral had appeared within the field of the nebula to fight for possession. There ensued what was perhaps the weirdest encounter ever witnessed. Though he was in poor physical shape, the Professor seemed to have an extremely powerful astral; and for some time the spectators despaired of Handlon's victory. Once the latter, evidently realizing that the powerful influence tube had rendered him visible, glanced sharply in Jimmie's direction. O'Hara was considerably puzzled at this, but watched the progress of the struggle tensely. At length the moment seemed to arrive which the reporter's astral had been awaiting. It turned tail and fled away from the astral of the Professor, disappearing beyond the outer confines of the nebula. Jimmie suddenly divined the other's purpose and dived for the hidden switch. As he had anticipated, Handlon had finally given up the attempt to overcome the astral of Kell by force and had made up his mind to accomplish his end by strategy. Almost on the instant that Jimmie's hand closed on the switch the reporter's astral again leaped into the field of the nebula. Fiercely it signalled to the former second story man to shut off the current, but the admonition was unnecessary, for Jimmie had already done so. * * * * * Swiftly the cloud-cyst faded. Even as the group caught a fleeting sight of Skip Handlon, the last that mortal eyes would ever see of him as he actually was, there came a violent disturbance at the edge of the shrinking nebula. Would the speed of condensation of the atoms which comprised the body of Professor Kell serve to shut out the pursuing astral of Kell? Even Bland held his breath!