At the same time Glinda crooned a weird incantation in the language of sorcery, her voice sounding low and musical.
After a little the violet sparks ceased, and those that had fallen upon the boat had disappeared and left no mark upon its surface.

The ceremony was ended and Glinda returned the skeropythrope to the Wizard, who put it away in his black bag.
"That ought to do the business all right," he said confidently.
"Let us make a trial and see," she replied.
So they both entered the boat and seated themselves.
Speaking in a tone of command the Sorceress said to the boat: "Carry us across the lake, to the farther shore." At once the boat backed off the sandy beach, turned its prow and moved swiftly over the water.
"Very good--very good indeed!" cried the Wizard, when the boat slowed up at the shore opposite from that whence they had departed.

"Even Coo-ee-oh, with all her witchcraft, could do no better." The Sorceress now said to the boat: "Close up, submerge and carry us to the basement door of the sunken island--the door from which you emerged at the command of Queen Coo-ee-oh." The boat obeyed.

As it sank into the water the top sections rose from the sides and joined together over the heads of Glinda and the Wizard, who were thus enclosed in a water-proof chamber.

There were four glass windows in this covering, one on each side and one on either end, so that the passengers could see exactly where they were going.