in ancient Egypt, i. 66, 67 sq., 225, 230 sq.;
in ancient Babylonia, i. 66 sq.;
positive and negative, i. 111 sq., 117;
blent with the worship of the dead, i. 164;
physical basis of, i. 174 sq.;
public and private, i. 214 sq., 245;
benefits conferred by, i. 218 sq.;
has paved the way for science, i. 219;
attraction of, i. 221;
fatal flaw of, i. 221 sq.;