NATIVE. TRIBES: 25

controlled by a proud and aggressive people, always alert to pay off old scores,
and eager to carry off coveted properties to add to their own wealth. Ambition
and avarice stimulated quarrels; potlatches and annual migrations to fishing-
grounds or for intertribal trade gatherings, offered tempting opportunities for
the renewal of old feuds. Powerful tribes, such as the Haida, also made peri-
odical forays on their weaker brethren to the south to replenish their supply of
slaves.