THE FIRST MIXED LOAD Of permanent colonists arrived on Mars; six of the seventeen survivors of the twenty-three originals returned to Earth.  Prospective colonists trained in Peru at sixteen thousand feet.  The president of Argentina moved one night to Montevideo , taking with him such portables as could be stuffed into two suitcases, and the new Presidente started an extradition process before the high Court to yank him back, or at least the two suitcases.  Last rites for Alice Douglas were held privately in the National Cathedral with less than two thousand attending, and editorialists and stereo commentators alike praised the dignified fortitude with which the Secretary General took his bereavement.  A three-year-old named Inflation, carrying 126 pounds with Jinx Jenkins Up, won the Kentucky Derby, paying fifty-four for one, and two guests of the Colony Airotel, Louisville , Kentucky , discorporated, one voluntarily, the other by heart failure.