I wish to be able on our return to the upper regions to make a map of our journey, a kind of vertical section of the globe, which will be, as it were,...

He had partially unveiled the face of Nature, but her immortal lineaments were still a wonder and a mystery. He might dissect, anatomise, and give nam...

“We accept,” I answered; “only I will ask your permission, sir, to address one question to you—one only.” “Speak, sir.” “You said that we should be fr...

All this while we were advancing on our journey; and at length night came; but as I had remarked the evening before, the luminous state of the atmosph...

My uncle was careful to note every hour the indications of the compass, of the manometer, and of the thermometer, all which he afterwards published in...

If my astonishment increased, my patience was well-nigh exhausted. What natural force could possibly have produced such abnormal and extraordinary pla...

Thus at Yakoust in Siberia, it has been remarked that the heat increases a degree every thirty-six feet. The difference evidently depends on the condu...