"The fact that it is not diaphanous, convinces me that it is a dense vapour formed by the calorification of ascending moisture dephlogisticated by refraction. A few endiometrical experiments would confirm this, but it is not necessary.—The thing is obvious."
So he shut up his glass and went into his shell to make a note of the discovery of the world's end, and the nature of it.
"Profound mind!" said Professor Angle-Worm to Professor Field-Mouse; "profound mind! nothing can long long remain a mystery to that august brain."
Night drew on apace, the sentinel crickets were posted, the Glow-Worm and Fire-Fly lamps were lighted, and the camp sang to silence and sleep. After breakfast in the morning, the expedition moved on. About noon a great avenue was reached, which had in it two endless parallel bars of some kind of hard black substance, raised the height of the tallest Bull Frog above the general level. The scientists climbed up on these and examined and tested them in various ways. They walked along them for a great distance, but found no end and no break in them. They could arrive at no decision. There was nothing in the records of science that mentioned anything of this kind. But at last the bald and venerable geographer, Professor Mud Turtle, a person who, born poor, and of a drudging low family, had, by his own native force raised himself to the headship of the geographers of his generation, said:
"My friends, we have indeed made a discovery here. We have found in a palpable, compact and imperishable state what the wisest of our fathers always regarded as a
