"You'll see," said Billy, and began to drag the King over to the window where the calcium was burning brightly.

"Help me, help me, Jack!" called the King, trying to sit down on the floor. But Billy kept him from doing so, and finally reached the window. Quick as a flash he turned the entire Northern Light right into the room, and with a sizzle, splash—puff the ice doors went up in steam. The next moment he found the lever that controlled the lamp, and zip the light was out.

My, my, my but how dark it got—darker than a thousand nights—blacker than a million hats. The King let go of Billy's collar and commenced wildly to grope for the machine.

"Now to escape," cried Billy. "Barker, lead me out by scent," and quickly he pulled Barker out of his pocket, tied a string to his collar and turned him loose.

Barker gave one little yelp, and then darted for the doorway with Billy hot after him. Out they ran into the open air, and picking Barker up in his arms, up jumped Billy away from Aurora Borealis.


[CHAPTER XV.]

BILLY MEETS GLUCOSE.

To say that Billy was glad to see real sunshine and feel its warmth again, hardly expresses his joy, when, on emerging from Aurora Borealis, he floated into a warmer climate.