Three days after the grand sleighing party to Dalton, Nan came down to breakfast looking very pale and worried.  
"What is the trouble, Nan?" questioned her mamma. "What has happened?"
 
"Oh, mamma, I scarcely feel like telling," answered Nan. "I am afraid you'll laugh at me."
 
"I fancy you had best tell me," went on Mrs. Bobbsey.
 
"I saw the ghost last night—or rather, early this morning."
 
"What, the ghost that I saw?" shouted Bert.
 
"I think it must have been the same. Anyway, it was about that high"—Nan raised her hand to her shoulder—"and all pure white."
 
"Oh, Nan!" shivered Freddie. "Don't want no ghostses!"
 
"I don't want to see it," put in Flossie, and edged closer to her mamma as if fearful the ghost might walk into the dining room that minute.
 
"This is certainly strange," came from Mr. Bobbsey. "Tell us all about it, Nan."
 
"Oh, papa, you won't laugh?" and Nan's face grew very red. "I—I—didn't think of it then, but it must have been very funny," she continued.
 
"It's not very funny to see a ghost, Nan," said Mrs. Bobbsey.
 
"I don't mean that—I mean what I did afterward¹. You see I was asleep and I woke up all of a sudden, for I thought somebody had passed a hand over my face. When I looked out into the room the ghost was standing² right in front of the dresser. I could see into the glass and for the minute I thought there were two ghosts."
 
"Oh!" came from Flossie. "Two! Wasn't that simply dreadful!" And she crouched³ closer than ever to her mamma.
 
"As I was looking, the ghost moved away toward the window and then I saw there was but one. I was so scared I couldn't call anybody."
 
"I believe you," said Bert. "It's awful, isn't it?"
 
"This is certainly strange," said Mr. Bobbsey, with a grave look on his face. "What did you do next, Nan?"
 
"You—you won't laugh, papa?"
 
"No."
 
"I thought of my umbrella. It was resting against the wall, close to the bed. I turned over and reached for the umbrella, but it slipped down and made a terrible noise as it struck the floor. Then I flung the covers over my head."
 
"What did you want the umbrella for?" questioned Freddie, in great wonder. "'Twasn't raining."
 
"I thought I could—could punch the ghost with it," faltered⁴ Nan.
 
At this Bert could hold in no longer, and he set up a shout of laughter, which was instantly repressed by Mr. Bobbsey.
 
"Oh, Nan, I'm sorry I laughed," said her twin brother, when he could speak. "But the idea of your poking⁵ at a ghost with an umbrella!"
 
"It was more than you tried to do," said Mr. Bobbsey dryly.
 
"That is so." Bert grew red in the face. "Did you see the ghost after that?" he asked to hide his confusion.
 
"No."
 
"Not at all?" asked Mrs. Bobbsey.
 
"No, mamma. I stayed under the covers for about a minute—just like Bert did—and when I looked the ghost was gone."
 
"I will have to investigate this," said Mr. Bobbsey seriously. "It is queer that neither I nor your mamma has seen the ghost."
 
"I ain't seen it," said Flossie.
 
"Don't want to see it," piped in Freddie.
 
Dinah, in the kitchen, had heard Nan's story and she was almost scared to death.
 
"Dat am de strangest t'ing," she said to Sam, when he came for his dinner. "Wot yo' make of it, hey?"
 
"Dunno," said Sam. "Maybe sumbuddy's gwine to die."
 
The matter was talked over by the Bobbsey family several times that day, and Mr. Bobbsey remained awake nearly all of that night, on the watch for the ghost. The following night Mrs. Bobbsey watched, and then Dinah took her turn, followed by Sam, who sat in the upper hall in a rocking chair, armed with a club. But the ghost failed ............