"You have no lead!"
"No, but I have mercury."
So saying, he took the thermometer, which stood at 50° above zero, and went outside and laid it on a block of ice. Then he came in again, and said, "Tomorrow! Go to sleep, and wait till the sun rises."
With the first streak of dawn next day, the Doctor and Johnson rushed out to look at the thermometer. All the mercury had frozen into a compact cylindrical mass. The Doctor broke the tube and took it out. Here was a hard piece of metal ready for use.
"It is wonderful, Mr. Clawbonny; you ought to be a proud man."
"Not at all, my friend, I am only gifted with a good memory, and I have read a great deal."
"How did that help you?"
"Why, I just happened to recollect a fact related by Captain Ross in his voyages. He states that they pierced a plank, an inch thick, with a bullet made of mercury. Oil would even have suited my purpose, for, he adds, that a ball of frozen almond oil splits through a post without breaking in pieces."
"It is quite incredible!"
"But it is a fact, Johnson. Well, come now, this bit of metal may save our lives. We'll leave it exposed to the air a little while, and go and have a look for the bear."