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NEED not describe the manner of my flight. It is enough to say that, to my delight, I reached our neighbor planet called Mars, and at once proceeded to study its physical features and its human life.

Everything was vastly different from what I had been long accustomed to see and to imagine, and I felt quite assured that I was living in a dream. But I knew of no way to convince myself as to my bearings, so I concluded to make the best use of my time and opportunities, and leave questionings to the future.

As a physical world Mars bears a most striking resemblance to our Earth. The length of its year is six hundred and eighty-seven of our days, and the length of its day is twenty-four hours and thirty-seven minutes. Its diameter is about one-half that of the Earth and its distance from the Sun is