Our descent was now resumed by means of the second gallery. Hans took up his post in front as usual. We had not gone more than a hundred yards when the Professor carefully examined the walls.  
"This is the primitive formation—we are on the right road—onwards is our hope!"
 
When the whole earth got cool in the first hours of the world's morning, the diminution of the volume of the earth produced a state of dislocation in its upper crust, followed by ruptures, crevasses and fissures. The passage was a fissure of this kind, through which, ages ago, had flowed the eruptive granite. The thousand windings and turnings formed an inextricable labyrinth through the ancient soil.
 
As we descended, successions of layers composing the primitive soil appeared with the utmost fidelity of detail. Geological science considers this primitive soil as the base of the mineral crust, and it has recognized that it is composed of three different strata or layers, all resting on the immovable rock known as granite.
 
No mineralogists had even found themselves placed in such a marvelous position to study nature in all her real and naked beauty. The sounding rod, a mere machine, could not bring to the surface of the earth the objects of value for the study of its internal structure, which we were about to see with our own eyes, to touch with our own hands.
 
Remember that I am writing this after the journey.
 
Across the streak of the rocks, colored by beautiful green tints, wound metallic threads of copper, of manganese, with traces of platinum and gold. I could not help gazing at these riches buried in the entrails of Mother Earth, and of which no man would have the enjoyment to the end of time! These treasures—mighty and inexhaustible, were buried in the morning of the earth's history, at such awful depths, that no crowbar or pickax will ever drag them from their tomb!
 
The light of our Ruhmkorff's coil, increased tenfold by the myriad of prismatic masses of rock, sent its jets of fire in every direction, and I could fancy myself traveling through a huge hollow diamond, the rays of which produced myriads of extraordinary effects.
 
Towards six o'clock, this festival of light began sensibly and visibly to decrease, and soon almost ceased. The sides of the gallery assumed a crystallized tint, with a somber hue; white mica began to commingle more freely with feldspar and quartz, to form what may be called the true rock—the stone which is hard above all, that supports, without being crushed, the four stories of the earth's soil.
 
We were walled by an immense prison of granite!
 
It was now eight o'clock, and still there was no sign of water. The sufferings I endured were horrible. My uncle now kept at the head of our little column. Nothing could induce him to stop. I, meanwhile, had but one real thought. My ear was keenly on the watch to catch the sound of a spring. But no pleasant sound of falling water fell upon my listening ear.
 
But at last the time came when my limbs refused to carry me longer. I contended heroically against the terrible tortures I endured, because I did not wish to compel my uncle to halt. To him I knew this would be the last fatal stroke.
 
Suddenly I felt a deadly faintness come ............