"Oh, I'm going up very shortly," said Jumpo. "All I've got to do is to fasten some court plaster on the wheels so they won't drop off when we're up in the air, and then I've got to take along a piece of string to tie the engine fast with, and then we'll go up. I'll bring you back in time for dinner, all right."

"Then I'll go," said Jimmie. "I never have been up in an airship, and it must be fun."

"I'll be glad to have you along," spoke Jumpo, "because if anything happens, you can fly down to the ground with me on your back and neither of us will get hurt."

"Why, do you think anything may happen?" asked Jimmie, sort of scared like.

"Well, you never can tell," answered Jumpo, as he fastened the roller skate wheels on with sticking plaster. "Airships sometimes do fall," and he whistled a funny little tune.

"Bur-r-r-r-r! Wow! Wow!" exclaimed Jimmie. "I guess my mamma is calling me. I'll see you again, Jumpo. Goodbye!"

"Oh, don't go. I guess nothing will happen," called the green monkey, and then Jimmie came back.

Well, pretty soon the airship was finished. Oh! I wish you could have seen it, but of course you can't on account of what happened to it. I'll tell you all about it, however.

"Come on, get aboard, Jimmie!" called Jumpo. "There's room for you beside me on the washboard," and he got up and so did the duck boy, and then they were ready to start. Jumpo had placed the airship on a smooth place where the roller skate wheels could go around very easily. The two umbrellas were hoisted to catch the air and the pinwheel buzzer was all ready to go bizz-buzz.

"Here we go!" called Jumpo, and he started the engine.