Yes, it is matter for regret, that much concerning our journeys and mission must be left unsaid and that necessarily the written account of our experiences must be somewhat sketchy, otherwise it would be too voluminous for the average reader's patient perusal. Through some Ento spirits we learned of the existence of these great caverns and of a very unique spectacle which, presently, we will observe. This one is much larger than any of those we have examined and, as you perceive, it contains no formation to break its immensity. We are about eleven miles distant from the outer entrance and quite one thousand feet below its level. A half mile further on will reveal the cause of this continuous vibration and the tumultuous detonations which resemble the discharge of artillery. Thanks to our spirit condition, we are invulnerable to the condition existing here, else we would not dare to approach the fiery horror we are nearing. The roaring of ocean's storm-tossed waves is as nothing to the sounds breaking upon the stillness of these cavernous depths; but fear not, madame, for with safety you may, with us, approach a scene so grand, so appalling that you are not likely to ever forget it. We now are in another great cavern whose floor slopes abruptly to this precipitous elevation and, standing on its edge, we look down upon a very hell of tumultuous flames. Yes, lacking a stirring feature or two, it easily might hold its own against Dante's "Inferno." Look, now, away toward the left where is bursting forth a huge column of flame. Up, up, toward the vaulted roof it climbs, twisting, curving, writhing like a gigantic serpent; now it slowly sinks downward and is engulfed. Now in the distance a storm is raging. See how the fiery billows are rising; higher, higher, leaping and curving their angry crests they madly rush toward us as though they would overwhelm us and as they burst against this precipice, involuntarily one shrinks back from their hot, mephitic breath. Observe that pyramidal fountain near the centre. Is not it grandly, wonderfully beautiful? See how it forms itself into a rose shape, while from its heart numerous jets shoot upward. A moment and it is gone and all over the surface of the fiery lake myriad fantastic shapes of many hued flames are glowing, scintillating and projecting themselves toward the lofty roof, forming a magnificent pyrotechnic display. The noise is indeed deafening and the ever changing spectacle so awe inspiring that words cannot adequately describe its terrible, but wondrous beauty. Truly, silence is at times golden. Medium--Still, I should like some one to break the silence by an explanation of this, to me, strange phenomenon. Is it volcanic?