"Now," said my uncle, "let us breakfast; but we must lay in a good stock, for we don't know how long we may have to go on."
The biscuit and extract of meat were washed down with a draught of water mingled with a little gin.
Breakfast over, my uncle drew from his pocket a small notebook, intended for scientific observations. He consulted his instruments, and recorded:
"Monday, July 1.
"Chronometer, 8.17 a.m.; barometer, 297 in.; thermometer, 6° (43°
F.). Direction, E.S.E."
This last observation applied to the dark gallery, and was indicated by the compass.
"Now, Axel," cried the Professor with enthusiasm, "now we are really going into the interior of the earth. At this precise moment the journey commences."
So saying, my uncle took in one hand Ruhmkorff's apparatus, which was hanging from his neck; and with the other he formed an electric communication with the coil in the lantern, and a sufficiently bright light dispersed the darkness of the passage.
Hans carried the other apparatus, which was also put into action. This ingenious application of electricity would enable us to go on for a long time by creating an artificial light even in the midst of the most inflammable gases.
"Now, march!" cried my uncle.