5 A study of the actual time traveled from the mouth of the Arkansas to
the river Daycao (Bourne, De
Soto,
I, 166-180) reveals that about seventy
days were so spent. This does not include the detour at Guasco. Accepting
the estimate of 150 leagues (Bourne, De
Soto,
I, 182) as something near the
correct distance traversed in those seventy days, the result is an average
near six miles per day.
