If only Myrtle would pay attention to the Boy's Own Journal, Blackwood's Magazine, etc., she would know that these creatures were Threls, who come from a worldlet called Threlfall on the far side of the asteroid belt. This Threlfall is a cheerless, chilly spot, and the whole history and religion of the Threls has been concerened with their quest... If only Myrtle would pay attention to the Boy's Own Journal, Blackwood's Magazine, etc., she would know that these creatures were Threls, who come from a worldlet called Threlfall on the far side of the asteroid belt. This Threlfall is a cheerless, chilly spot, and the whole history and religion of the Threls has been concerened with their quest to knit a nice woolly coverlet for it.