"We want that quite as much as you do," said Harl. "And to find Tugh. If he is a friend we must save him; if a traitor—punish him."
Larry began, "But can you get to the other cage?"
"Only if it stops," said Tina. "When it stops, I should say."
"Come here," said Harl. "I will show you."
arry crossed the glowing room. He had forgotten its aspect—the ghostly unreality around him. He too—his body, like Harl's and Tina's—was of the same wraith-like substance.... Then, suddenly, Larry's viewpoint shifted. The room and its occupants were real and tangible. And outside the glowing bars—everything out there was the unreality.
"Here," said Harl. "I will show you. It is not visible yet."
Each of the cages was equipped with an intricate device, strange of name, which Larry and I have since termed a Time-telespectroscope. Larry saw it now as a small metal box, with tuning vibration dials, batteries, coils, a series of tiny prisms and an image-mirror—the whole surmounted by what appeared the barrel of a small telescope. Harl had it leveled and was gazing through it.[1]
[1] The workings of the Time-telespectroscope involve all the intricate postulates and mathematical formulae of Time-traveling itself. As a matter of practicality, however, the results obtained are simple of understanding. The etheric vibratory rate of the vehicles while traveling through Time was constantly changing. Through the telespectroscope one cage was visible to the other across the five hundred feet of intervening Space when they approached a simultaneous Time; when they, so to speak, were tuned in unison.