Sirius signified certain emanations which caused its malignant influence. Anyone suffering its effects was said to be "star-struck" (, "astrobólētos"). It was described as "burning" or "flaming" in literature. The season following the star's reappearance came to be known as the "dog days". The inhabitants of the island of Ceos in the Aegean Sea would offer sacrifices to Sirius and Zeus to bring cooling breezes, and would await the reappearance of the star in summer. If it rose clear, it would portend good fortune; if it was misty or faint then it foretold (or emanated) pestilence. Coins retrieved from the island
The Sirius Mystery that the Dogon probably gained from Europeans to some extent resembles the facts about Sirius, the presumed original Dogon knowledge on the star is very far from the facts. Ridpath concluded that the information that resembles the facts about Sirius was probably ascertained by way of cultural contamination. More recent research suggests that the contaminator was Griaule himself. Astronomer Carl Sagan touched upon the issue in his book "Broca's Brain" (1979), seeing problems in Temple's hypothesis. As an example, Sagan believes that because the Dogon seem to have no knowledge of another planet beyond Saturn which has rings, that their