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HE third day after the incubator ceremony we set forth toward home, but scarcely had the head of the procession debouched into the open ground before the city than orders were given for an immediate and hasty return. As though trained for years in this particular evolution, the green Martians melted like mist into the spacious doorways of the near-by buildings, until, in less than three minutes, the entire cavalcade of chariots, mastodons and mounted warriors was nowhere to be seen.

Sola and I had entered a building upon the front of the city, in fact, the same one in which I had had my encounter with the apes, and, wishing to see what had caused the sudden retreat, I mounted to an upper floor and peered from the window out over the valley and the hills beyond; and there I saw the cause of their sudden scurrying to cover. A huge craft, long, low, and gray painted, swung slowly over the crest of the nearest [72]