Extinction of Rights
Rights in respect of which no claim has been preferred under section 5, and of the existence of which no knowledge has been acquired by inquiry under section 7, shall be extinguished unless, before the final notification under section 17 is published, the person claiming them satisfies the Forest Settlement Officer that he had sufficient cause for not preferring such claim within the period fixed under section 5 in which case the Forest Settlement Officer shall proceed to dispose of the claim as hereinafter provided.