“I’m terribly, terribly sorry,” said poor Bets. “I just sort of slipped. Oh, Fatty, now we can’t write in invisible writing.”
Daisy mopped up the rest of the ink. All the children were disappointed. Buster still hung out his tongue, and had such a disgusted look on his face that Larry fetched him some water to take the nasty taste out of his mouth.
“Well, I know one or two more ways of writing invisibly,” said Fatty, much to Bets’ relief. “Any one got an orange? Now, watch out for a little magic!”
Two Thrilling Lessons
There was a dish of oranges in the room. Bets fetched them. She watched with great interest as Fatty made a hole in one, and squeezed the yellow juice into a cup.
“There!” he said, “orange or lemon juice makes quite good invisible ink, you know.”
The others didn’t know. They thought Fatty was very clever immediately to think of some more invisible ink when Bets had upset his bottle.
He took a clean sheet of paper, dipped his pen in the orange juice, and wrote what looked like a letter. He said out loud what he was writing, and it made the children giggle:
“DEAR CLEAR-ORF, - I suppose you think you will solve the next mystery first. Well, you won’t. Your brains want oiling a bit. They creak too much. Hugs and kisses from
“THE FIVE FIND-OUTERS AND DOG.”