During that halt for lunch--and what an awful lunch that was--Milton brought forward his journal, and Drorathusa, by means of pictures drawn in the book, made it clear to us that they would never have missed the route had it not been for the loss of their beloved demon. That, of course, made Rhodes and me very sorry; but, if the demon had not been killed, we certainly should have been even more sorry--and, I'm afraid, in a worse place than this in which we now found ourselves. This strange intelligence, too, reminded me of grandfather Scranton's wonder as to how _his_ angel and her demon had journeyed over rock, snowfield and glacier to the Tamahnowis Rocks through that dense, blinding vapor. I understood that now; they were guided by the wonderful instinct of the ape-bat. How truly wonderful that instinct is, we were yet to learn. Little wonder that Drorathusa mourned the loss of her dear, beloved, her hideous demon! The bat has in all ages been the personification of repulsiveness, gloom and horror; and yet it is in many ways a very wonderful creature. For instance, it can fly through intricate passages with ease and certitude _when blinded_, avoiding any obstacle in or across its way as though in possession of perfect vision. No marvel, therefore, that some scientists have declared that the bat must possess a sixth sense. The accepted explanation, however, is that the creature discovers the objects, in the words of the great Cuvier, "by the sole diversity of aerial impressions." However that may be, this wonderful faculty is possessed by the great ape-bats of Drome. Not that it is for this that they are valued by the Dromans. It is because it is impossible for the ape-bat to get lost. It matters not how long, how devious, how broken, savage, mysterious the way; the demon is never uncertain for one single moment. And a singular feature of this most singular fact is that the creature does not have to retrace the route itself, and it does not matter what time has elapsed. It may be a month, years; it is all the same to the demon. He may return to the point of departure by the outward trail, or he may go back in a bee-line or in a line as closely resembling a bee-line as the circumstances will permit. From this it may easily be inferred how greatly the Dromans value these dreadful, repulsive creatures. When venturing out into the "lands of shadows" or into the caverns of utter darkness, these beasts are simply invaluable. In the "lands of shadows," they never fail to give warning of the approach of the wild ape-bats, those wolves of the air, or of other monsters; whilst, in the dark caverns--into which the wild bats sometimes wander for considerable distances--a man, though he may be utterly lost himself, knows that his demon will guide him safely back to the world of light.