Jean-André Deluc (1727-1817) was a Swiss naturalist and physicist who studied geology and actually coined the word "geology." He was strongly committed to the Genesis record of creation and the worldwide flood. He and his father developed the modern mercury thermometer and the hygrometer. He wrote books on both geology and meteorology and ardently opposed Buffon's evolutionary theories. Excerpted from Men of Science, Men of God by Henry M. Morris. Copyright 1982, 1988 by Henry M. Morris. Used by permission.