"'Tis well advised--the Chieftain's plan 55
Bespeaks the father of his clan.
But wherefore sleeps Sir Roderick Dhu
Apart from all his followers true?"
"It is, because last evening-tide
Brian an augury hath tried, 60
Of that dread kind which must not be
Unless in dread extremity,
The Taghairm called; by which, afar,
Our sires foresaw the events of war.
Duncraggan's milk-white bull they slew." 65