This was such a dreadful threat, especially as Flossie and Freddie had been allowed to stay up past their regular bedtime hour on their promise to be good, that they at once quieted down.

With Bert and Nan in the lead, the smaller Bobbsey twins followed their older brother and sister. Bert reached a door opening into a large closet near the kitchen. It was in this closet that the children were to hide the things they were carrying, and why they were going to do this you will soon learn.

But just as Bert was about to open the closet door, Flossie gave a little wriggle, and, pulling her hand away from Nan—the hand that did not hold a package—the little Bobbsey girl whispered:

“It—it’s goin’ to be some more, Nan!”

“What is, dear?”

“My—my ker—snee——!”

The rest was a sort of gurgle, choke, and cough mingled with a sneeze. Flossie had covered her mouth and nose with one hand, and thus tried not to make as much noise as she otherwise would.

“Say! everything will be spoiled,” declared Bert. “I never saw such children! We ought to ’a’ made them hide their things this afternoon!”

“Flossie can’t help it,” said Nan kindly. “Maybe she is catching cold. I must tell mother to give her some medicine.”

“’Tisn’t cold,” declared Flossie. “It’s some dust got up my nose. There was dust in the closet where Freddie made me crawl to get him a cigar box.”