Now a frown sat heavily upon his arrogantly patrician face, as his eyes bored into the plate before him, from the base of which were issuing the words being spoken by the assistant pictured in its deep surface:

"—the fifth dived into the deepest ocean of Corvina II, in the depths of which all rays are useless. The ships which followed have not as yet reconnected. No trace of the sixth has been found, and it is therefore assumed that she was destroyed upon Velantia——"

"Who assumes so?" demanded Helmuth, coldly. "There is no justification whatever for such an assumption. Go on!"

"The Lensman, if there is one, must therefore be in the fifth ship, since he was not in any of the four which we have retaken."

"Your report is neither complete nor conclusive. I do not at all approve of your intimation that the Lensman is simply a figment of my imagination. That there is a Lensman is the only possible logical conclusion. None other of the patrol forces could have done what has been done. Postulating his reality, it seems to me that instead of being a rare possibility, it is highly probable that he has again escaped us, and again in one of our own vessels—this time in the one you have so conveniently 'assumed' to have been destroyed. Have you searched the line of flight?"

"Yes, sir. Everything in space and every planet within reach of that line has been examined with care; except, of course, Velantia and Trenco."

"Velantia is, for the time being, unimportant. It will be reduced later. Why Trenco?" and Helmuth pressed a series of buttons. "Ah, I see. To recapitulate, one ship, the one which in all probability is now carrying the Lensman, is still unaccounted for. Where is it? We assume that it left Velantia. We know that it has not landed upon or near any solarian planet. Incidentally, we must see to it that it does not so land. Now, I think, it has become necessary to have that planet Trenco combed, inch by inch."

"But sir, how——" began the anxious-eyed underling.

"When did it become necessary to draw diagrams and make blue prints for you?" demanded Helmuth, harshly. "We have ships manned by Rigellians and other races having the sense of perception. Find out where they are and get them there at full blast!" He flipped over two double-throw switches, thus replacing the image upon his plate by another.

"It has now become of paramount importance that we complete our knowledge of the Lens of the patrol," he began, without salutation or preamble. "Have you traced its origin yet?"