"But victuals and water?"
"I have calculated for a twelvemonth's supply, and I shall be only four days on the journey."
"But for air to breathe on the road?"
"I shall make it by a chemical process."
"But your fall on the moon, supposing you ever reach it?"
"It will be six times less dangerous than a sudden fall upon the earth, because the weight will be only one-sixth as great on the surface of the moon."