(continued)

It was down this shaft they took him, in this "sort of balloon" he speaks of, at first into an inky blackness and then into a region of continually increasing phosphorescence.  Cavor's despatches show him to be curiously regardless of detail for a scientific man, but we gather that this light was due to the streams and cascades of water—"no doubt containing some phosphorescent organism"—that flowed ever more abundantly downward towards the Central Sea.  And as he descended, he says, "The Selenites also became luminous."  And at last far below him he saw, as it were, a lake of heatless fire, the waters of the Central Sea, glowing and eddying in strange perturbation, "like luminous blue milk that is just on the boil."

"This Lunar Sea," says Cavor, in a later passage "is not a stagnant ocean;  a solar tide sends it in a perpetual flow around the lunar axis, and strange storms and boilings and rushings of its waters occur, and at times cold winds and thunderings that ascend out of it into the busy ways of the great ant-hill above.  It is only when the water is in motion that it gives out light;  in its rare seasons of calm it is black.  Commonly, when one sees it, its waters rise and fall in an oily swell, and flakes and big rafts of shining, bubbly foam drift with the sluggish, faintly glowing current.  The Selenites navigate its cavernous straits and lagoons in little shallow boats of a canoe-like shape;  and even before my journey to the galleries about the Grand Lunar, who is Master of the Moon, I was permitted to make a brief excursion on its waters.

"The caverns and passages are naturally very tortuous.  A large proportion of these ways are known only to expert pilots among the fishermen, and not infrequently Selenites are lost for ever in their labyrinths.  In their remoter recesses, I am told, strange creatures lurk, some of them terrible and dangerous creatures that all the science of the moon has been unable to exterminate.  There is particularly the Rapha, an inextricable mass of clutching tentacles that one hacks to pieces only to multiply;  and the Tzee, a darting creature that is never seen, so subtly and suddenly does it slay . . ."

He gives us a gleam of description.

"I was reminded on this excursion of what I have read of the Mammoth Caves;  if only I had had a yellow flambeau instead of the pervading blue light, and a solid-looking boatman with an oar instead of a scuttle-faced Selenite working an engine at the back of the canoe, I could have imagined I had suddenly got back to earth.  The rocks about us were very various, sometimes black, sometimes pale blue and veined, and once they flashed and glittered as though we had come into a mine of sapphires.  And below one saw the ghostly phosphorescent fishes flash and vanish in the hardly less phosphorescent deep.  Then, presently, a long ultra-marine vista down the turgid stream of one of the channels of traffic, and a landing stage, and then, perhaps, a glimpse up the enormous crowded shaft of one of the vertical ways.

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