the tantradox now began eating , smoking , and injecting earthworms and nightworms flown to them by conjoined harpies , as well as the eggs of vultures , hawks , eagles , archaeopteryxes , phoenixes , rocs , and cockatrices , brought to them by their siamese twin slaves which walked the arm of the crane in a solemn procession , descended its long hook , and delivered their offerings to their overlords before being taken away on the rising circular platforms .