Rocking-Horse Flydetails

“All right,” said the Gnat: “Half way up that bush, you’ll see a Rocking-horse-fly, if you look. It’s made entirely of wood, and gets about by swinging itself from branch to branch.”

“What does it live on?” Alice asked with great curiosity.

“Sap and sawdust.” said the Gnat. (p. 57)