"Well, Captain, it's so much gained! We ought to avail ourselves of it."
But Hatteras did not answer. Evidently he had lost all interest in the conversation, or perhaps he was listening without hearing.
"Well," answered the doctor, "according to certain scientific men, it would be worth while to try this expedition."
"What! really?" exclaimed Johnson.
"But let me finish," answered the doctor. "I will tell you. I must first tell you this flattening of the poles is the cause of the precession of the equinoxes; that is to say, why every year the vernal equinox comes a day sooner than it would if the earth were perfectly round. This comes from the attraction of the sun operating in a different way on the heaped-up land of the equator, which then experiences a retrograde movement. Subsequently it displaces this Pole a little, as I just said. But, independently of this effect, this flattening ought to have a more curious and more personal effect, which we should perceive if we had mathematical sensibility."
"What do you mean?" asked Bell.
"I mean that we are heavier here than at Liverpool."
"Heavier?"
"Yes; ourselves, the dogs, our guns, and instruments!"
"Is it possible?"