ceremonies at felling a tree in the island of, ii. 37
Siphoum, in Laos, taboos observed by salt-workers at, iii. 200
Sipi in Northern India, annual fair and dance at, x. 12
Sipylus, Mother Plastene on Mount, v. 185
Siriac or Sothic period in ancient Egypt, vi. 36
Sirius (the Dog-star), the soul of Isis in, iv. 5;
observed by Egyptian astronomers, vi. 27;
called Sothis by the Egyptians, vi. 34;
date of its rising in ancient Egypt, vi. 34;