and from theth he came to the city of moung and the temple of moung-ga-ling , and entered and saw the spider-idol , hlo-hlo , sitting there with dead mans diamond glittering on his lap , and looking for all the world like a full moon , but a full moon seen by a lunatic who had slept too long in its rays , for there was in dead mans diamond a certain sinister look and a boding of things to happen that are better not mentioned here .