This chapter outlines the morphological differentiation within the body of Taylor's true riddle, but only a rough one, sufficient for giving an idea of its reality and significance. It takes a true riddle based on the description of a strange moving object. Taylor's conception delineates the true riddle in two different ways: from outside and inside. From outside, Taylor distinguished the true riddle from literary and false riddles. Encompassed by his collection is the entire field of the folk riddle from oral tradition, notwithstanding its compliance with his structural principles. Taylor's observation about the derivative nature of the types of folk riddle that are simpler than the true riddle has a strong historical implication. While Petsch's structural formula of the authentic folk riddle considers the full form as a possible embellishment on the essential formula, Taylor's collecting experience shows that the full-fledged essential form appears alongside a convoy of degenerated forms.