"There are two kinds of gills, I think; one is a girl, and the other is--" "A gillyflower," said Jack.
"No; a measure." "How big a measure ?" "Well, I'll ask Dorothy." So next morning they asked Dorothy, and she said: "I don't just know how much a gill is, but I've brought along a gold flask that holds a pint.

That's more than a gill, I'm sure, and the Crooked Magician may measure it to suit himself.

But the thing that's bothering us most, Jack, is to find the well." Jack gazed around the landscape, for he was standing in the doorway of his house.
"This is a flat country, so you won't find any dark wells here," said he.

"You must go into the mountains, where rocks and caverns are." "And where is that ?" asked Ojo.
"In the Quadling Country, which lies south of here," replied the Scarecrow.

"I've known all along that we must go to the mountains." "So have I," said Dorothy.
"But--goodness me!--the Quadling Country is full of dangers," declared Jack.