"This is the main tank," said Slagg, leading his friend to a small platform that hung over a black and apparently unfathomable gulf.
"I see nothing at all," said Robin, stretching his head cautiously forward and gazing down into darkness profound, while he held on tight to a rail. "How curious!—when I look down everything in this wonderful ship seems to have no bottom, and when I look up, nothing appears to have any top, while, if I look backward or forward things seem to have no end! Ah! I see something now. Coming in from the light prevented me at first. Why, it 's like a huge circus!"
"Yes, it on'y wants hosses an' clowns to make it all complete," said Slagg. "Now, that tank is 68 feet 6 inches in diameter, and 20 feet 6 inches deep, an' holds close upon 900 miles of cable. There are two other tanks not much smaller, all choke-full. An' the queer thing is, that they can telegraph through all its length now, at this moment as it lies there,—an' they are doing so continually to make sure that all 's right."
"Oh! I understand that," said Robin quickly; "I have read all about the laying of the first cable in 1858. It is the appearance of things in this great ship that confounds me."
"Come along then, and I'll confound you a little more," said Slagg.
