Featured on PDR in the collection Guess Me (1879)

Illustrated by George Cruikshank among others, this example of good old-fashioned and wholesome entertainment offers a collection of enigmas, conundrums, acrostics, "decapitations", and a series of incredibly tricky rebuses. The preface explains that an enigma can have many solutions whereas a conundrum only has one, and that "The essence of a good conundrum is to be found in its answer, which should be itself something of a pun, a puzzle, or an epigram, an inversion of the regular and ordinary meaning of the word." Some of the 631 conundrums included in the book: