Greenwood, what you are saying is if the author says Smaug was the last of the great worms of Middle-earth in the Hobbit and that is not contradicted by the text of LotR; then, the author amplifying his thoughts in HoMe or UT or Sil by saying that more existed in the Withered Hearth would not be substantiated.
Grond
Yes. In the world of Middle Earth found in The Hobbit and The Lord of the Rings, there would indeed be no more great worms.
If Tolkien had not rewritten the Riddle Game in later editions of The Hobbit we would be left with an irreconcilable difference between The Hobbit and LOTR. He did, however, make the change. If there are differences between The Hobbit and LOTR and the posthumously published works, they are indeed at this point in time irreconcilable, because only the author can make any necessary changes definitive, not an editor, even if the editor is the author's son. (Unless the son/editor can produce documentation showing the author had delegated such authority to said editor -- I know of no such declaration in Tolkien's case.) I guess you can say that I hold Tolkien's published words in greater "reverence" than even the most fanatic purist or NPW. It is one of the reasons I resent others putting words in Tolkien's mouth. (Please note, Grond, I do not say or believe that you have ever done this.)
